H22A prelude tuning problem (not for any over my cars)

[blackvr4]

Posting this for my friend who has a h22a4 prelude just installed a turbo kit t3/t4 running at 8psi. I've been helping him tune his car, We have been correcting the fuel tables and have the car running great with awesome AFRs until 4,300RPM then it starts breaking up REALLY bad, He def does not stay WOT when it breaks up, We checked Vtec engagement and its set at 5200. I am just curious what you honda gurus know about this Hondata S300 system, maybe something we can try.

Other than the break up at 4200 the car is running solid!

Thanks for any help guys!

[Renegade_]

Does the breakup happen simply at the RPM or is it throttle position dependent?

[blackvr4]

Does the breakup happen simply at the RPM or is it throttle position dependent?

It was throttle position related, I figured it out tho, Being that I have only tuned DSMs I completly forgot that there is a highspeed table. He had a 440CC injector and supercharger map loaded and we just have been making adjustments to that, But they had Vtec set to 3000rpms, we switched it to stock 5200RPM, but I forgot to make adjustments to the High Speed table, which was twice as rich than his low speed table, so Im assuming when he was getting into the highspeed table it would go ungodly rich and pop, I made adjustments to the highspeed table and now its a lot better. Still not perfect but we are making changes little by little before he starts doing WOT pulls.

[Keeper1343]

yea thanks alot alex!!! Car feels great. The problem is as follows now: I get on it partial throttle then begin to floor it and wants to break up... Problem is i cant watch the A/F gauge at the same time im pulling lol. Not on a dyno lol. Does anyone know if the AEM Wideband can be wired to hondata?