09-10-2023, 11:58 PM | #1 |
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Do I really need a tune?
Haven't ordered yet, but here's what I'm thinking:
AA or Fabspeed catted primaries Fabsped (open to suggestions!) catless secondaries Akrapovic full catback Eventuri intake Eventuri turbo inlets Given how adaptable modern stock ECUs are, is it not reasonable to think that the stock ECU can adapt it's mappings well enough to take full advantage of the [hopefully massive] improved airflow? Last edited by omgmike; 09-11-2023 at 08:17 AM.. |
09-11-2023, 09:43 AM | #3 |
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Someone correct me if I’m wrong, but my guess is that a piggy back tune(jb4) or stage 1 tune will net a larger power increase than any of those mods. If it’s mainly sound and looks you want then disregard.
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09-11-2023, 09:51 AM | #4 |
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Reduced restriction means more air through the motor with the same stock boost. Without a piggyback or tune you wont be adding boost or remapping vanos to take advantage of reduced backpressure or leaning a fat stock mixture. Might end up with close to the same gains as a stage 1 tune on a stock motor with no bolt on mods if I had to guess.
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09-11-2023, 11:25 AM | #5 |
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It depends on what you are looking for, Adding the mods without a tune will net some power gains, but you won't get full advantage.
If the power increase is not a concern, then you can skip the tune.
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omgmike359.00 |
09-11-2023, 12:21 PM | #6 |
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09-11-2023, 05:13 PM | #7 | |
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This is for bragging rights against some fellow gearheads. I can just barely eek out victory now, I'd like to do so emphatically, but I'd like to do it with something like Dinan's pre-LCI tune rather than a full on custom tune. |
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09-11-2023, 05:15 PM | #8 | |
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I was hoping to avoid a custom tune, that's why I posted the other thread asking if Dinan or anyone else had cracked LCI encryption yet. |
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09-11-2023, 05:25 PM | #9 | |
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09-11-2023, 11:09 PM | #10 |
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If you’re looking to push into the 700s, you’re going to need the tune and if you plan for the supporting mods you might as well go down that rabbit hole. My larger concern is running those power levels without forged connecting rods as I wouldn’t want to see you make a thread stating that cylinder 6 for example left the engine block.
I’ve seen it once already on a fully stock F90 and if you’re looking to do highway pulls at much higher levels than stock then you should be fully aware of full sending with the S63. |
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09-12-2023, 07:48 AM | #11 | |
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The rest of your mods should definitely wake up the car some. Add a piggyback and you will be in the mid to low 10s on pump gas. About the primary catted downpipes.....I feel like the "better" the quality of the cats that ensure you don't get a Cel, the more stock the pipe becomes rendering the whole thing useless IMO. Having an aftermarket 400 cell primary catted downpipe is probably going to have negligible gains over stock primaries. |
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09-12-2023, 10:44 AM | #12 |
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I’m not an expert at all but I’ve seen smart people on the forum remark how well the stock downpipes flow already.
As if to say unless you are deleting the cat entirely it’s not really worth it to change primary to a “high flow” cat. Maybe something to consider. |
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09-12-2023, 11:39 AM | #13 | |
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09-12-2023, 11:46 AM | #15 | |
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All tunes have off the shelf maps where you don't need tp pay for a custom map
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09-27-2023, 09:08 PM | #16 |
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Thanks, and sorry for the delayed follow up. I've been crazy busy trying to wrap up taking care of my dad's estate. I'll PM you once things settle down a bit more for me and I can give this the proper time and research it needs.
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09-28-2023, 09:14 AM | #17 |
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