i was wondering if there is anyone on here that has a series5 TII that has intake and exhaust and an safc. i have my safc at +2 % across the board (just to be safe for now) and i think its killing my power.

are there any common rpm points (to modded TIIs) where i could lean it out 4-5% and still be safe? i know to richen up the midrange between 3-4000 a little bit, but what about the topend? i was under the impression that the stock ECU has a very rich topend map, but i'm really not sure.
for low boost i'm running 8 lbs (9 bleeding to 7) and with the MBC on, i'm spiking to about 12, hitting 11, and coming down to 9 by redline. so about 10 lbs with the MBC and 8 lbs without.

i KNOW the correct way to tune is with a wideban, but i'm just looking to add/subtract a few percent through the RPM range, not get radical.

 

well probably the best place to lean it out would be idle. At idle your car runs very rich so I have mine down like 9 or 10%. Beyond that I don't want to say anything cause I don't want to be held responsible for ****** **** up but I can offer this peice of advice. The only other way that some people tune it (not everyone) is by getting an egt gauge and going by the temp. By the time you get a descent one and get it installed blah blah blah you could easily pay an hour or two on a dyno. Just my 2 cents.

 

It will be different for each persons set up.

The best thing todo is get it on a dyno with a wideband.

 

there should be a baseline thats common to start tuning from though...if you havelarger injectors I'd lean out about 5% above 4K and wait for a dyno appt. If you run the stock fuel system I'd richen the car up gradually from 4K up over 1-2 % increments till redline to be safe.