Tonight i went to the track after installing a new j-pipe for my turbo compressor housing which is ported to match the turbo and for better airflow. also added a dumptube off my wastegate. the car was previously tuned a few weeks before this and was running fine, now my rev limiter hits earlier than it use to. rev limiter was set to 7200rpms but it only goes to around 6800 in any gear and only around 6200-6500 in neutral. what could be the cause of this? Is the car running leaner with the new stuff i added? really sucks cause i was shifting early at the track and hitting rev limiter when it shouldnt have been. any help would be greatly appreciated. oh and setup is jdm d15b vtec turbo(14b) with 450cc injectors and walbro 255 with uberdata

 

help anyone

 

post this in <U>Forced Induction </U> forum

 

I asked a mod to move it.

Have you changed your maps or anything other than the J pipe and WG dumptube?

 

nope thats all i changed.

 

anyone