Just wanted to add a little more info for everyone.
Matt’s car was running fine with the standard 8 lb pulley but Matt wanted take advantage of the available 93 octane fuel in his area and make more power (don’t we all) so he purchased some high flow cats and we sent him a 9 lb pulley. He then had the car custom tuned. We do not know anything about the specific tuning (A/F ratios, timing curves, etc) that was done on the car. This particular tuner is a premier UpRev tuning shop and absolutely knows the vehicle as they did the original custom tune with the 8 lb pulley.
We have talked with UpRev about the issues Matt is having and they have agreed to talk with the tuner to try and help. UpRev continually is analyzing the different ECU MAPS that are installed in the NISSAN and INFINITI Z and G’s as we are at STILLEN.
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