Real Talk- RC Black or JB4 or..?

pbonsalb · 04-02-2022, 08:12 AM

Secondary downpipes should not throw a CEL. Some high flow cat primary downpipes will throw a CEL. It depends on how effective the high flow cat is. The most expensive ones probably use higher grade cats that are good enough the 02 monitoring does not know the difference, like maybe Fabspeed, Active Autowerk, Keller and Red Star.

CarEnthusiast29 · 04-03-2022, 02:03 PM

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Originally Posted by MaybeanM5

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Originally Posted by CarEnthusiast29

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Originally Posted by GranitM5

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Originally Posted by CarEnthusiast29

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Originally Posted by Ron1n

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Originally Posted by CarEnthusiast29

I have a jb4 on my m5 CS and love it. I didn't go flash tune because I didn't want to instantly blow my warranty. The power difference is noticeable. The car feels that much faster and even more fun to drive now. And it's so cheap for the gains you get.

You can't go flash tune on your CS (right now, unless you wanted to send your ECUs to Russia), so there's that, too.

Yeah but people like DME would send it out and then flash it, so you can do a flash tune if you want. Like I said, I didn't want a blown warranty right now

So you'd rather wait and find out that you have no warranty after your engine blows?

You'll get caught either way. When you mod your car, you just pray that nothing fails. If it does, they will dig in and see.

That's not true, first a Jb4 can be removed. Second bmw does not bust balls for exhaust or intakes etc. a flash tune automatically voids your warranty where a piggy back does not always.

I was told by my local shop that some downpipes would bet about 20/30 whp but would throw a CEL

It will add that power

MaybeanM5 · 04-03-2022, 02:04 PM

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Originally Posted by CarEnthusiast29

Quote:

Originally Posted by MaybeanM5

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Originally Posted by CarEnthusiast29

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Originally Posted by GranitM5

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Originally Posted by CarEnthusiast29

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Originally Posted by Ron1n

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Originally Posted by CarEnthusiast29

I have a jb4 on my m5 CS and love it. I didn't go flash tune because I didn't want to instantly blow my warranty. The power difference is noticeable. The car feels that much faster and even more fun to drive now. And it's so cheap for the gains you get.

You can't go flash tune on your CS (right now, unless you wanted to send your ECUs to Russia), so there's that, too.

Yeah but people like DME would send it out and then flash it, so you can do a flash tune if you want. Like I said, I didn't want a blown warranty right now

So you'd rather wait and find out that you have no warranty after your engine blows?

You'll get caught either way. When you mod your car, you just pray that nothing fails. If it does, they will dig in and see.

That's not true, first a Jb4 can be removed. Second bmw does not bust balls for exhaust or intakes etc. a flash tune automatically voids your warranty where a piggy back does not always.

I was told by my local shop that some downpipes would bet about 20/30 whp but would throw a CEL

It will add that power

Problem is I don't want a CEL

BMA89 · 04-03-2022, 07:54 PM

Quote:

Originally Posted by MaybeanM5

Quote:

Originally Posted by CarEnthusiast29

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Originally Posted by MaybeanM5

Quote:

Originally Posted by CarEnthusiast29

Quote:

Originally Posted by GranitM5

Quote:

Originally Posted by CarEnthusiast29

Quote:

Originally Posted by Ron1n

Quote:

Originally Posted by CarEnthusiast29

I have a jb4 on my m5 CS and love it. I didn't go flash tune because I didn't want to instantly blow my warranty. The power difference is noticeable. The car feels that much faster and even more fun to drive now. And it's so cheap for the gains you get.

You can't go flash tune on your CS (right now, unless you wanted to send your ECUs to Russia), so there's that, too.

Yeah but people like DME would send it out and then flash it, so you can do a flash tune if you want. Like I said, I didn't want a blown warranty right now

So you'd rather wait and find out that you have no warranty after your engine blows?

You'll get caught either way. When you mod your car, you just pray that nothing fails. If it does, they will dig in and see.

That's not true, first a Jb4 can be removed. Second bmw does not bust balls for exhaust or intakes etc. a flash tune automatically voids your warranty where a piggy back does not always.

I was told by my local shop that some downpipes would bet about 20/30 whp but would throw a CEL

It will add that power

Problem is I don't want a CEL

I have catless secondary down pipes and it doesn't have any CEL issues and it definitely added performance and better sound! Definitely recommend

MaybeanM5 · 04-03-2022, 07:58 PM

Quote:

Originally Posted by BMA89

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Originally Posted by MaybeanM5

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Originally Posted by CarEnthusiast29

Quote:

Originally Posted by MaybeanM5

Quote:

Originally Posted by CarEnthusiast29

Quote:

Originally Posted by GranitM5

Quote:

Originally Posted by CarEnthusiast29

Quote:

Originally Posted by Ron1n

Quote:

Originally Posted by CarEnthusiast29

I have a jb4 on my m5 CS and love it. I didn't go flash tune because I didn't want to instantly blow my warranty. The power difference is noticeable. The car feels that much faster and even more fun to drive now. And it's so cheap for the gains you get.

You can't go flash tune on your CS (right now, unless you wanted to send your ECUs to Russia), so there's that, too.

Yeah but people like DME would send it out and then flash it, so you can do a flash tune if you want. Like I said, I didn't want a blown warranty right now

So you'd rather wait and find out that you have no warranty after your engine blows?

You'll get caught either way. When you mod your car, you just pray that nothing fails. If it does, they will dig in and see.

That's not true, first a Jb4 can be removed. Second bmw does not bust balls for exhaust or intakes etc. a flash tune automatically voids your warranty where a piggy back does not always.

I was told by my local shop that some downpipes would bet about 20/30 whp but would throw a CEL

It will add that power

Problem is I don't want a CEL

I have catless secondary down pipes and it doesn't have any CEL issues and it definitely added performance and better sound! Definitely recommend

What kind and where did you get them installed ?

BMA89 · 04-03-2022, 08:01 PM

Quote:

Originally Posted by MaybeanM5

Quote:

Originally Posted by BMA89

Quote:

Originally Posted by MaybeanM5

Quote:

Originally Posted by CarEnthusiast29

Quote:

Originally Posted by MaybeanM5

Quote:

Originally Posted by CarEnthusiast29

Quote:

Originally Posted by GranitM5

Quote:

Originally Posted by CarEnthusiast29

Quote:

Originally Posted by Ron1n

Quote:

Originally Posted by CarEnthusiast29

I have a jb4 on my m5 CS and love it. I didn't go flash tune because I didn't want to instantly blow my warranty. The power difference is noticeable. The car feels that much faster and even more fun to drive now. And it's so cheap for the gains you get.

You can't go flash tune on your CS (right now, unless you wanted to send your ECUs to Russia), so there's that, too.

Yeah but people like DME would send it out and then flash it, so you can do a flash tune if you want. Like I said, I didn't want a blown warranty right now

So you'd rather wait and find out that you have no warranty after your engine blows?

You'll get caught either way. When you mod your car, you just pray that nothing fails. If it does, they will dig in and see.

That's not true, first a Jb4 can be removed. Second bmw does not bust balls for exhaust or intakes etc. a flash tune automatically voids your warranty where a piggy back does not always.

I was told by my local shop that some downpipes would bet about 20/30 whp but would throw a CEL

It will add that power

Problem is I don't want a CEL

I have catless secondary down pipes and it doesn't have any CEL issues and it definitely added performance and better sound! Definitely recommend

What kind and where did you get them installed ?

I got the MAD secondary downpipes (they call them mid pipes for some reason) - very inexpensive mod. I got it installed by my trusted local mechanic in Boston.

https://x-ph.com/mad-bmw-f90-m5-f92-...RoCF5IQAvD_BwE

MaybeanM5 · 04-03-2022, 08:03 PM

Quote:

Originally Posted by BMA89

Quote:

Originally Posted by MaybeanM5

Quote:

Originally Posted by BMA89

Quote:

Originally Posted by MaybeanM5

Quote:

Originally Posted by CarEnthusiast29

Quote:

Originally Posted by MaybeanM5

Quote:

Originally Posted by CarEnthusiast29

Quote:

Originally Posted by GranitM5

Quote:

Originally Posted by CarEnthusiast29

Quote:

Originally Posted by Ron1n

Quote:

Originally Posted by CarEnthusiast29

I have a jb4 on my m5 CS and love it. I didn't go flash tune because I didn't want to instantly blow my warranty. The power difference is noticeable. The car feels that much faster and even more fun to drive now. And it's so cheap for the gains you get.

You can't go flash tune on your CS (right now, unless you wanted to send your ECUs to Russia), so there's that, too.

Yeah but people like DME would send it out and then flash it, so you can do a flash tune if you want. Like I said, I didn't want a blown warranty right now

So you'd rather wait and find out that you have no warranty after your engine blows?

You'll get caught either way. When you mod your car, you just pray that nothing fails. If it does, they will dig in and see.

That's not true, first a Jb4 can be removed. Second bmw does not bust balls for exhaust or intakes etc. a flash tune automatically voids your warranty where a piggy back does not always.

I was told by my local shop that some downpipes would bet about 20/30 whp but would throw a CEL

It will add that power

Problem is I don't want a CEL

I have catless secondary down pipes and it doesn't have any CEL issues and it definitely added performance and better sound! Definitely recommend

What kind and where did you get them installed ?

I got the MAD secondary downpipes (they call them mid pipes for some reason) - very inexpensive mod. I got it installed by my trusted local mechanic in Boston.

https://x-ph.com/mad-bmw-f90-m5-f92-...RoCF5IQAvD_BwE

Pmd you

Laoschris · 04-03-2022, 09:42 PM

Just installed VRSF secondaries and Racechip. Will say I'm pleasantly impressed and happy with this setup.

Racechip was extremely easy to install (about 10 mins) and you can definitely feel the extra power.

I had JB4 on my F80s before BM3 was available. Didn't have any issues with JB4, but wanted to give RC a try. Definitely recommend if you want a PNP option and set and forget.

Slugsy01 · 04-11-2022, 05:29 PM

So I have something called Dtuk tuning chip in my 2022 F90 currently which I believe is similar to RaceChip.

It doesn't seem to agree with my install of Akra exhaust and Eventuri (which I have checked) so I contacted my local BMW tuning garage and they are getting it on dyno, then replacing with a Jb4 and then going back on dyno.

Not expecting a great deal of difference but they have a lot of experience with Jb4 so hoping it can be tailored a bit better to my car v the tuning chip.

pbonsalb · 04-11-2022, 06:18 PM

Strange that two mods that add next to no power would affect a tune. Did you add any more serious mods at the same time like catless downpipes?

Slugsy01 · 04-12-2022, 04:55 PM

Quote:

Originally Posted by pbonsalb

Strange that two mods that add next to no power would affect a tune. Did you add any more serious mods at the same time like catless downpipes?

No but I am getting the install checked, I'm not 100% sure it was done right, especially the intakes

Slugsy01 · 04-16-2022, 06:02 PM

So I got the Jb4 installed and to be honest, I'm not massively impressed v the chip. It's got a touch more HP but less torque and it doesnt feel as responsive in low revs. I'm thinking of going back to the chip I had in it.

I'll post the dyno results which showed stock v chip v jb4.

Kriz2fer · 04-16-2022, 07:20 PM

Quote:

Originally Posted by Slugsy01

So I got the Jb4 installed and to be honest, I'm not massively impressed v the chip. It's got a touch more HP but less torque and it doesnt feel as responsive in low revs. I'm thinking of going back to the chip I had in it.

I'll post the dyno results which showed stock v chip v jb4.

Very interested in this. I have both as well.

Kponti · 04-21-2022, 07:39 AM

Quote:

Originally Posted by Slugsy01

So I got the Jb4 installed and to be honest, I'm not massively impressed v the chip. It's got a touch more HP but less torque and it doesnt feel as responsive in low revs. I'm thinking of going back to the chip I had in it.

I'll post the dyno results which showed stock v chip v jb4.

Any updates? This is very interesting. Thanks

mike@x-ph.com · 04-22-2022, 09:26 AM

Quote:

Originally Posted by Slugsy01

So I got the Jb4 installed and to be honest, I'm not massively impressed v the chip. It's got a touch more HP but less torque and it doesnt feel as responsive in low revs. I'm thinking of going back to the chip I had in it.

I'll post the dyno results which showed stock v chip v jb4.

Which map are you running? datalogs?

Pimpsy · 04-25-2022, 09:28 PM

Quote:

Originally Posted by Slugsy01

So I got the Jb4 installed and to be honest, I'm not massively impressed v the chip. It's got a touch more HP but less torque and it doesnt feel as responsive in low revs. I'm thinking of going back to the chip I had in it.

I'll post the dyno results which showed stock v chip v jb4.

Promises, promises...

Kriz2fer · 04-27-2022, 05:48 PM

Quote:

Originally Posted by GranitM5

You think if you lower you car and you have a suspension issue that they'll pay the bill?

I have tuned every car I have ever had and never had my warranty blown. I have also been fortunate that I never had a major issue.

Removing the jb4 or bm3 or Rc won't do anything. When they get to digging, they will find what they need.

This topic has been covered many times on this forum. Don't be misinformed.

Do you have one verified case of a warranty being denied after the piggyback was removed properly?

Slugsy01 · 04-30-2022, 05:39 PM

Quote:

Originally Posted by Pimpsy

Quote:

Originally Posted by Slugsy01

So I got the Jb4 installed and to be honest, I'm not massively impressed v the chip. It's got a touch more HP but less torque and it doesnt feel as responsive in low revs. I'm thinking of going back to the chip I had in it.

I'll post the dyno results which showed stock v chip v jb4.

Promises, promises...

Sorry! Will do it in three morning!

euro* · 05-01-2022, 04:33 PM

Quote:

Originally Posted by Kriz2fer

Quote:

Originally Posted by GranitM5

You think if you lower you car and you have a suspension issue that they'll pay the bill?

I have tuned every car I have ever had and never had my warranty blown. I have also been fortunate that I never had a major issue.

Removing the jb4 or bm3 or Rc won't do anything. When they get to digging, they will find what they need.

This topic has been covered many times on this forum. Don't be misinformed.

Do you have one verified case of a warranty being denied after the piggyback was removed properly?

Yes

Kriz2fer · 05-01-2022, 05:43 PM

Quote:

Originally Posted by euro*

Yes

Please share this story

euro* · 05-01-2022, 05:48 PM

Quote:

Originally Posted by Kriz2fer

Quote:

Originally Posted by euro*

Yes

Please share this story

Came to the dealer with the engine problem, they scanned the car, did their diagnostics and determined that the car was operating way outside of stock parameters and declined to fix the issue.

onfireX5 · 05-01-2022, 09:23 PM

Quote:

Originally Posted by euro*

Came to the dealer with the engine problem, they scanned the car, did their diagnostics and determined that the car was operating way outside of stock parameters and declined to fix the issue.

How long had the piggy been removed before taking it to the dealership ?

04-02-2022, 08:12 AM	#23
pbonsalb Lieutenant General 5234 Rep 10,616 Posts Drives: 18 F90 M5, 99 E36 M3 Turbo Join Date: Feb 2011 Location: New England iTrader: (4)	Secondary downpipes should not throw a CEL. Some high flow cat primary downpipes will throw a CEL. It depends on how effective the high flow cat is. The most expensive ones probably use higher grade cats that are good enough the 02 monitoring does not know the difference, like maybe Fabspeed, Active Autowerk, Keller and Red Star.
	Appreciate 0 Quote

04-03-2022, 09:42 PM	#30
Laoschris Second Lieutenant 491 Rep 216 Posts Drives: G80 Join Date: Jun 2017 Location: Florida iTrader: (3)	Just installed VRSF secondaries and Racechip. Will say I'm pleasantly impressed and happy with this setup. Racechip was extremely easy to install (about 10 mins) and you can definitely feel the extra power. I had JB4 on my F80s before BM3 was available. Didn't have any issues with JB4, but wanted to give RC a try. Definitely recommend if you want a PNP option and set and forget.
	Appreciate 0 Quote

04-11-2022, 05:29 PM	#31
Slugsy01 First Lieutenant 157 Rep 307 Posts Drives: E63s AMG Estate Join Date: May 2015 Location: Newcastle iTrader: (0)	So I have something called Dtuk tuning chip in my 2022 F90 currently which I believe is similar to RaceChip. It doesn't seem to agree with my install of Akra exhaust and Eventuri (which I have checked) so I contacted my local BMW tuning garage and they are getting it on dyno, then replacing with a Jb4 and then going back on dyno. Not expecting a great deal of difference but they have a lot of experience with Jb4 so hoping it can be tailored a bit better to my car v the tuning chip.
	Appreciate 0 Quote

04-11-2022, 06:18 PM	#32
pbonsalb Lieutenant General 5234 Rep 10,616 Posts Drives: 18 F90 M5, 99 E36 M3 Turbo Join Date: Feb 2011 Location: New England iTrader: (4)	Strange that two mods that add next to no power would affect a tune. Did you add any more serious mods at the same time like catless downpipes?
	Appreciate 0 Quote

04-16-2022, 06:02 PM	#34
Slugsy01 First Lieutenant 157 Rep 307 Posts Drives: E63s AMG Estate Join Date: May 2015 Location: Newcastle iTrader: (0)	So I got the Jb4 installed and to be honest, I'm not massively impressed v the chip. It's got a touch more HP but less torque and it doesnt feel as responsive in low revs. I'm thinking of going back to the chip I had in it. I'll post the dyno results which showed stock v chip v jb4.
	Appreciate 0 Quote