BNR Turbos, sheets and engine spec plz!

[FerociousP]

Originally Posted by RotaryDiagnostics

Here's a sheet from a recent dyno run. Car has a BNR Stage 1 turbo, 750cc RC secondaries, 3" RB REV-II turbo-back exhaust system, Supra TT fuel pump, Bonez intake, and Apexi S-AFC II tuning.

Tried the Rtek 1.7 chip, but the tuner could not get a safe AFR, so had to revert to a stock ECU and rely on the S-AFC for tuning. Engine runs awesome on the track. It does have an intermittent starting problem and a bit of a rough idle, which I will address during the off season. May try chipping a different ECU.

I have the same setup just with a stock turbo and no S-AFC. What issues did you attribute to the RTEK 1.7 that were fixed with the stock ecu? or was it just you couldn't tune with it?