Loss of power

[Luis911]

My mustang does not have catalytic converters, Mufflers was normal, a month ago he got direct exhaust tailpipe 18 inches, was lost torque but responded well, a few days ago has been lost power to accelerate, and then accelerates to the top is lost, this happens in any speed. It will be the change that was made or because he was a cleaner injectors?

 

[7upstang91]

it may sound silly but try to clean the mass air meter. Does it try to rev higher when accelerating quicky? any backfiring?

 

[Luis911]

it may sound silly but try to clean the mass air meter. Does it try to rev higher when accelerating quicky? any backfiring?

My car does not have a MAF it uses a MAP, and when I accelerate it does rev up considerably but it loses power and torque and does not move forward enough . No backfiring

 

[blubullett]

Maybe a mass air swap would help with the drivability problems you are having. Your modifications may be too much for your speed density computer to compensate. Or a dyno tune.

 

[1987stangman]

Maybe a mass air swap would help with the drivability problems you are having. Your modifications may be too much for your speed density computer to compensate. Or a dyno tune.

No way, he does not have much in the way of mods listed in his sig. I have way more than that and still run SD with no problems.

I will give a hint of something to check though. After I got my rebuild back together I had an acceleration issue that turned out to be a bad TPS. The best advice I can give you at this point would be to invest in a code reader from the auto parts store and pull the computers codes. It's a start. For me it solved my problem in 10 min.

 

[Luis911]

I think it fails the differential , an increase is slow, a quick start at first gear is slow, I will not move the car until that happens not to investigate. Some evidence that it can be done?

updated:
KOEO = code 11 Ok
KOER (Engine running)= code 12 and 42, , but this would not affect the loss of power