im only throwing a iac code,and when i use a chipped pr4(dumps alot of fuel so i dont like it)it drives fine
but if i use a pm6 it bogs down when i accelerate really fast

and i bog down if i floor it,but this only happens if im running on a pm6 or ps9 ecu,the chipped pr4 im on now wont do it but it gives me bad gas mileage.

so anything you know of that can make a car bog down let me know

 

I had a similar problem, could be a bad ECU. I guess just to make sure open it up and see if anything is burnt or smells burnt. Hope this helps.
Don

 

i am positive the pm6 is not bad i saw it in a running car,could it be a vacuum leak and since the pr4 is chipped to dump more fuel the leak doesn affect it

 

a million +2 things

 

^ x2 million more things

 

ok well whats the most common things

 

You told me it was running really rich right? Possibly flooding the cylinders with fuel???

 

it does,on a pr4 i got a pm6 and now it bogs down if i floor it,under normal driving its fine

 

Maybe when you floor it, it's getting too much gas and not enough spark to run. Does the car have stock injectors?

 

stock si injectors and it only bogs down with the pm6,on the pr4 it runs perfect,im thinking its somthing to do with the tps,throttle body or vacuum leak i can hear hah