[CBMAC7]

Hey guys been looking into the RB turbo option. I'm debating about what setup to go with. Currently I have FBO with Cobb protune from Pro Tuning Freaks. I have a BMS meth kit and JB4 but not installed yet. Debating whether to go with cobb protune and no meth with RB's or BMS backend flash with jb4, meth and RB's? Any feedback would be great. Thanks

[Jeef]

IMO, anyway you go you will be happy , just make sure to have your meth set up correctly if you are going that route.

[CBMAC7]

Thanks Jeff. Ya the meth is the only thing I worry about. Has to be perfect. Also how much HP/TQ can the 6AT handle? I know I should have stuck with 6MT but this car was immaculate!

[Scrippy]

Originally Posted by CBMAC7

Thanks Jeff. Ya the meth is the only thing I worry about. Has to be perfect. Also how much HP/TQ can the 6AT handle? I know I should have stuck with 6MT but this car was immaculate!

I've read around here your good up to 450 maybe 500Hp on stock trans. I've heard of peeps going to 600 but I wouldn't do that.

[335NJ]

Originally Posted by CBMAC7

Hey guys been looking into the RB turbo option. I'm debating about what setup to go with. Currently I have FBO with Cobb protune from Pro Tuning Freaks. I have a BMS meth kit and JB4 but not installed yet. Debating whether to go with cobb protune and no meth with RB's or BMS backend flash with jb4, meth and RB's? Any feedback would be great. Thanks

I'd contact PTF a and see what they can do, since you already have a COBB and work with them. That's my .02, or contact Wedge.

[Danimals]

Whatever set up it is, I'd wait a bit and see what the super RB turbos are gonna bring to the table.

[135Pats]

Originally Posted by Scrippy

I've read around here your good up to 450 maybe 500Hp on stock trans. I've heard of peeps going to 600 but I wouldn't do that.

Torque (and heat) is what kills things, not WHP. With stock frames your margins are tighter because torque comes on so strong down low with tons of load.

With a single you can make 550-600WHP, the torque curve is a bit more gentle.

I'll have a definitive answer v soon

PS OP - go with PTF. It's not even a question, and I have tons of respect for BMS. But nothing beats PTF on this platform.

[Scrippy]

Originally Posted by 135Pats

Torque (and heat) is what kills things, not WHP. With stock frames your margins are tighter because torque comes on so strong down low with tons of load.

With a single you can make 550-600WHP, the torque curve is a bit more gentle.

I'll have a definitive answer v soon

PS OP - go with PTF. It's not even a question, and I have tons of respect for BMS. But nothing beats PTF on this platform.

I thought he was asking what HP the trans could handle reliably, not how to achieve the power. What horsepower would you take a 335 to and not worry about failure?

[135Pats]

Originally Posted by Scrippy

I thought he was asking what HP the trans could handle reliably, not how to achieve the power. What horsepower would you take a 335 to and not worry about failure?

We're on the same page - I was also talking the 6AT. On stock frames/RBs/VTT2s I wouldn't trust it much north of 500ish WHP, because torque comes on so violently. A standard 500WHP tune you should be totally fine.

With a single it's a bit unclear. I'll know soon enough...Dan (AK335) ran well over 700WHP through his and while the trans was not happy, to my knowledge it never let go or anything like that.

At 550-600WHP through a single turbo, it should be OK. The 6HP21 is a really good AT, and again the torque curve won't be as steep on spool.

What WHP would I take the motor to and feel comfortable? Depend on tuning....North of 700WHP you are rolling the dice IMO. Up to 600WHP this motor has proven itself time and time again, provided good tuning and a smart owner who doesn't cut corners or do dumb stuff.

[mike@x-ph.com]

Originally Posted by CBMAC7

Hey guys been looking into the RB turbo option. I'm debating about what setup to go with. Currently I have FBO with Cobb protune from Pro Tuning Freaks. I have a BMS meth kit and JB4 but not installed yet. Debating whether to go with cobb protune and no meth with RB's or BMS backend flash with jb4, meth and RB's? Any feedback would be great. Thanks

PTF do a really good job but i do not like the lack of flexibility.
Their maps are locked so anytime you need to make a change it has to go through them.
Thats why i went with BMS custom flash + JB4 custom map.

[Scrippy]

Originally Posted by 135Pats

We're on the same page - I was also talking the 6AT. On stock frames/RBs/VTT2s I wouldn't trust it much north of 500ish WHP, because torque comes on so violently. A standard 500WHP tune you should be totally fine.

With a single it's a bit unclear. I'll know soon enough...Dan (AK335) ran well over 700WHP through his and while the trans was not happy, to my knowledge it never let go or anything like that.

At 550-600WHP through a single turbo, it should be OK. The 6HP21 is a really good AT, and again the torque curve won't be as steep on spool.

What WHP would I take the motor to and feel comfortable? Depend on tuning....North of 700WHP you are rolling the dice IMO. Up to 600WHP this motor has proven itself time and time again, provided good tuning and a smart owner who doesn't cut corners or do dumb stuff.

Wow, great to hear. I was gonna try and get my 07 to 450 and stop. Just knowing there are people going to 600+ is pretty cool. I wouldn't pass 500 personally. I feel like after that your getting into unreliable land for the trans and rear end.

[135Pats]

Originally Posted by Scrippy

Wow, great to hear. I was gonna try and get my 07 to 450 and stop. Just knowing there are people going to 600+ is pretty cool. I wouldn't pass 500 personally. I feel like after that your getting into unreliable land for the trans and rear end.

Surprisingly the rear end has held up quite well in the high power builds...Singles really aren't well suited for the strip, so you don't see people launching them all over the place.

IMO a hard launch from an RB powered car is far more stressful on the rear end than a 40 roll in a single turbo car.

How the torque comes on is every bit as important as the peak number.

Dan ran over 700WHP on 6AT (granted the trans was pissed), Ando@bms ran mid 500WHP on 6AT, i'm almost positive there are others.

[CBMAC7]

Hey guys thanks for all the input so fast on this. So a 335xi 6AT could handle 450-500awhp? I want my car to also be reliable but also to kick some ass on the streets! Can I run COBB protune (PTF) and bms meth with RB's?

[Give_Em_The_DD]

Originally Posted by CBMAC7

Hey guys thanks for all the input so fast on this. So a 335xi 6AT could handle 450-500awhp? I want my car to also be reliable but also to kick some ass on the streets! Can I run COBB protune (PTF) and bms meth with RB's?

I have XI 6AT RBS setup...

Been running 450+ HP and north of 500-ish torque (also tuned by jake@motiv) for a while no, 0 issues.

[Stucks]

Originally Posted by 135Pats

At 550-600WHP through a single turbo, it should be OK. The 6HP21 is a really good AT, and again the torque curve won't be as steep on spool.

This.

Dan said his trans started slipping when he got to 660+ whp. Below that, he said it was perfectly fine.

[CBMAC7]

Great information guys. Getting excited! What are these super RB's you guys are talking about? And can I run COBB protune with BMS meth kit?

[Msport335]

i think PTF only tunes aquamist meth kit....but you can try Wedge out for the Cobb protune + BMS meth

[DuDai]

Originally Posted by CBMAC7

Great information guys. Getting excited! What are these super RB's you guys are talking about? And can I run COBB protune with BMS meth kit?

Rob is coming up with some new turbos to compete with the new stage 2+ turbos from Vargas.

[proTUNING Freaks]

OP, whichever turbo option you go with we have you covered. With countless stock frame upgrade turbo maps under our belt with N54s running all over the World, varying ambients, octane, mod configurations we are confident when it comes to our N54s

For those interested in stacking we have started supporting that as well but only in select cases where boost targets higher than the OEM TMAP sensor limit (~21psi) make sense (e.g. VTT Stage 2+, single turbos). Stacked configuration is done only with the JB4 G5 with its latest firmware which has timing correction logging for all 6 cylinders. Earlier versions of the JB hardware (G4 for example) and firmware that don't support timing correction across all 6 cylinders are not supported for stacked tuning by us.

In terms of meth we have run most and tuned with all the current methanol kits on the market. Aquamist HFS-4 has always been our meth kit of choice for methanol tuning on the N54. It supports 100% meth (many other kits don't), uses compression fittings everywhere to prevent leaks and losing prime, has one of if not the best on the market turbine based flow sensors that sits in the path of fluid flow that, along with their FAV (injection valve/solenoid), provides for very accurate injection metering and failsafety.

[uberbeast21]

anyone know how much power rb's no meth on 91 would make fbo?

[proTUNING Freaks]

We've seen anywhere from 385-400whp Dynojet STD numbers on 91 octane depending on mods, quality of octane, ambient temps, baro. 91 doesn't leave heck of a lot of room to push power on the hybrid turbo upgrades and you'd need either an E85 blend or methanol injection to take full advantage of them.

[CBMAC7]

Sounds great PTF. I'm gonna be going with Aquamsit HFS4 from your website. And RB's as well. I'm currently working with Dzenan on a 116 unleaded pure race map. See what we can do with that!