I am getting some hesitation/stuttering. It feels like a rev limiter when i get to 5000-5500rpm in 2nd gear+. Dosnt do it in first gear. I was running AFC hack (-35 from 2000 rpm up) on a P75 ecu, and tried switching to my friends chipped P28 ecu running a good boosted LS uberdata basemap, cuz i thought it was the AFC causing the problem. But I still have the same problem with either fuel managements. Anyone help me?

Setup:
B18B1 running at 9psi
PT 50 T3/T4 Turbo
Spearco FMIC
SFP Manifold
2.5" Downpipe
Blitz Bov
40mm Tial External Wastegate
AFC hack and/or Uberdata
Walbro 255lph fuel pump
DSM 450cc Injectors/Resitor Pack
NGK-R Supra 3330s plugs gapped @ .032"

 

i had a similar issue, adding a little timing cleared it right up.

 

I had the same issue when I was pulling too much timing.

 

When i used the AFC hack it was stock timing. with Uberdata it was .75 deg per PSi...

 

ttt for boost

 

bump

 

thats too much for low rpm and low boost.

you need to adjust that part of your tables. or you could keep bumping this to the top until the magic "all your problems will be fixed by clicking your heals 3 times" fairy shows up, but i wouldnt hold your breath.

 

What is to much? -35? I dont think so. I have also tried running Uberdata with 2 different basemaps, of which one has been known to run great on a very very similar B18b turbo setup..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Slammd Sol &raquo;</TD></TR><TR><TD CLASS="quote">When i used the AFC hack it was stock timing. with Uberdata it was .75 deg per PSi...</TD></TR></TABLE>

Anytime you adjust the AFC, you are adjusting timing...

If you pull fuel, you are advancing timing...

 

Update: If i whind the car out above 5500 without boosting, and then floor it it has no problem and goes right to redline.. WTF?

 

tune it and you won't have issues.... basemaps aren't going to drive exactly like stock.

with uberdata the farther you are from 240cc injectors the more tuning you are going to have to do.