RB20 Tuning Options

[Booztd 3]

Guys

I have a customer S13 that has been at my house for what seems like the last 6-7 months. We have done a few upgrades above/beyond a stock setup.

- RB25 Turbo
- External dump wastegate
- big FMIC setup
- 550cc injectors
- 300ZX MAF

Originally, I had this car running great on a stock tune, stock injectors, and stock MAF. It idled at 14.8 and cruised around great. It would just go lean because the turbo was a bit larger than the stock RB20 turbo.

When he had me add the 550cc injectors and Z32 MAF, this is where things took a turn. The only people I could find with tuning options was Enthalpy and it is a flash tune. This car is really hesitant to start up, always stumbles, and is lean all over the place. I am on my 6-7th different chip from Enthalpy and things are just not getting any better. I am not blaming them - because there is no good way to get them "good" data (like datalogging)

What is the best solution from here on out? Should I get Nistune (any input here would be greatly appreciated) what style board? ETC

Thanks!

[Yellow4g63]

I'd go with Nistune, had it before I went to the AEM S2.

[Booztd 3]

Enthalpy is sending me a ROM burner so we can decrease the turnaround time between chips...I guess I will go this route before going with the Nistune