I just got my car back from the shop and I still have one problem. My car struggles at high RPMS...

I recently had a flooded engine and my car would not boost. I got the flooding fixed and replaced a hose and a few other minor things to get the car boosting again. Now, for a while I was running all my mods (see my SIG), with a STOCK ecu because i had to temporarily get rid of my PowerFC.

I have upgraded fuel injectors (1200cc) so my car was running EXTREMELY rich for a while and wouldnt have any power in high rpms with the stock ecu. Thats because the stock computer cant handle all the mods I have.

Now that its boosting again and i have the PowerFC back in, the turbos work fine and everything and I get boost, but i start to lose power at high RPMs.

I think running so rich for a while may have melted my high flow cat and that is what is restricting airflow? Maybe I need new plugs? What would cause the high end power to be so low? Any suggestions would help. Thanks in advance.

 

Change your plugs and try it out ,if it is not better ,borrow a mid pipe and try it out .

 

running rich makes you run cooler then if you were running lean. perhaps you clogged the cats...

BTW: Why get a highflow cat and not a midpipe?

You can always grab a pipe and just punch out the cat

 

Take it back to the shop...........