When i hit the gas pedal to floor (floor it) the car revs up slow the mph goes up slow its like its struggling it runs like shitt!! Me and my mechanic thought it was a clogged cat so we put a straight pipe on the hks hi power exhaust my car is stock exept for the exhaust and hks intake and thats about it this problem has been going on for like 3-4 days now it was runnning fine before....hellpppp please

 

check your map sensor and check for boost leaks.

i doubt the map sensor would be the culprit as when the line is removed the car is barely responsive

 

Thanks :/

 

Also if you're on the stock ecu, you might wanna put that stock cat back on. Unless you want a bigger problem by the engine being completely dead.

 

Start with the obvious:

1. Check the map sensor vacuum line as indicated above
2. Pull the engine codes

Lastly, what is the history? When did the problem start? What happened from when the car was running fine to when the problem started?

 

Well 2 weeks ago the car was shutting off everytime i stopped we found out it was the coils and there was a grounding issue so that was solved then immediately after that te car would shut off when i made right turns so after days of tryin to figure out what was wrong we took off the left tire ad the wires harness were shredded the tires were too big and the car was so low plus no liners but we taped that up an tucked the wires so the car doesnt shut off on right turns but now it has that problem that it struggle for power we removed the cat yesterday n it still has that issue