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Cobb N54 - AFR too lean in spool mode acceleration (short log and map...
Hello all, I have this strange problem with my Cobb N54 which puzzles me. I have full bolt-ons and RB turbos and using 91 octane fuel with no methanol and no e85. I tuned the car myself for a 95RON (91...
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Throttle closures and boost overshoot. Input needed.
Hey guys. Lately I have been having some issues with boost overshoots resulting in throttle closures. I dont really feel this and it doesnt seem to affect the power of the car. The car pulls strong...
View ArticleFired up my single but?
But Im getting a lambada code.....I have triple checked and the o2s are in the correct spot. 2C24 Lambda proben in front of catalytic converter, muddled So its pre-cat which is good(easily accessible)...
View Articleneed help fast!!!!!! fuel question
hey guys im at the 1/4 track and im running about e35 to e37 on map 5 wita jb4 g5iso with the bms race-at flash and I put 2.5 gallons of 100oct race gas will I be able to run map 7???? with the stock...
View ArticleGoing back to stock flash from BBflash, JB settings?
What settings do I need to change so the jb can have control of everything again?
View Articlemjmarovi has just uploaded N54 BB Flash Single Turbo backend for JB4 by BMS...
mjmarovi has just uploaded N54 BB Flash Single Turbo backend for JB4 by BMS IJEOS! I'm not sure how much thi
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Help! Rolling event next Saturday
Ok guys so i've officially ran out of ideas on what to do and need help. Next Saturday I have a rolling event and would like my car running perfect for that event. For as long as I can remember this...
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Interest in running a return style fuel system?
Hey all, Wanted to gauge interest in this as I've been contacted a couple times recently about LPFP setups for big numbers. I've been running a return style system for about 8 months now and frankly...
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Incremental Update - Dyno
Took the car to the dyno today. My previous dyno session on the old tune is here: link. Only changes from then are ditched procede, added Cobb AP, running full e85 and meth (meth isn't really needed,...
View ArticleJB4 Logs - Dropping Timing.
When you see drops in timing under the JB4 logs, what does that mean? Is it caused by knocking, dentation or what?
View ArticleWagner Tuning?
I've heard a few people now refer to Wagner Tuning as a 'budget' parts brand, however, I'm yet to see a better (in theory) set of N54 downpipes than theirs. They are made with 70mm pipe which is far...
View ArticleThinking about doing up a Z4, thoughts?
So I am looking at buying a few year old Z4 and really doing it up. Probably an '09, manual, looking at doing either a hybrid or full replacement turbo set up, full bolt ons, upgraded HPFP, clutch,...
View ArticleIf it aint one thing its another...
Well today I had to take my car to the stealership because my main mechanic moved so I'm now forced to take it there in the event that something happens. To make a long story short, about a month ago I...
View ArticleV8Bait has just uploaded N54 tuning goodies, I8A0S and IJE0S!
V8Bait has just uploaded N54 tuning goodies, I8A0S and IJE0S! Included in the .zip is a
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ar design BMW 135i / 335i 3" Hi-Flo Downpipes
ar design 3" Hi-Flo Downpipes We are extremely excited to present our 135i / 335i 3" Hi-Flo catless downpipes (also available in a catted and resonated version)! The only TRUE 3" downpipes currently...
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ar design BMW 535i / 535xi 3" Hi-Flo Downpipes
ar design 535i/535ix 3" Hi-Flo Downpipes We are extremely excited to present our 535i/ 535xi 3" Hi-Flo catless (also available in catted and resonated) downpipes! The ONLY 3" downpipes currently on...
View ArticleNitrous Help needed
I am trying to put the finishing touches on everything before I take the car to the strip for some runs. I have a thread up over on n54tech but BMS won't give any support on their JB Interface in...
View ArticleHPFP pressure issues (low). Help! RB 135.
Fighting this car up and down the street. Different flashes, parts, etc always net mostly the same result. FPH plummets randomly. Running no more than 4-5gal E85 on a fill up of 93. HPFP is new, new...
View ArticleFilled in circle with brackets, car lunging, rpm jumping
Been dealing with a weird issue for the last two weeks. Its happened to me on two separate occasions a week apart.* Power cuts off Triangle with exclamation mark Filled in circle with brackets Rpm...
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