I have a brand new hi flow cat and cat back exhaust.. i have no power. through any rpm. i have a low rpm bucking and and after pushing the pedal past 35 percent the car just gives me a rumbling sound and doesnt accelerate. just makes like a air intake sound. and i took the car for a drive for a few minutes and still no power. i went and checked under the hood. and since this is the first time i opened the hood of the car at night.. i saw the exhaust manifold glowing bright red. right near the o2 sensor. could have been the whole manifold. but the heat sheild was in the way. After reading some of the other post on this .. i have been lead to believe it could be one of 3 things

Blown or bad apex seal.. I tested the car about 3 weeks ago before i started to really drive it and both of them pulled a little over 100 with a regular compression test.

Bad injector - a good possiblity

and Timing is off. that would explain the bad throttle response. and no power. .. what do you guys think ??

 

set your timing then come back

too far retarded will have the combustion in the exhaust

 

yeah ,, looks like it time to break down and buy a timing light ,, heheheh

 

good god man, its never ending with you ! i have a timing light i accidentally stole. i'd give it back, but he's gone.

 

timing is not something that should be taken lightly.

it can and has blown motors.

i think you might be experienceing high EGT due to your timing.

 

I know dude .. my car sucks,, but i love it !!!! i had a brand new cougar. it only had 23g on it .. and if my secondaries momentarly stuck i would want to sell the car on the spot.. this one barley runs and i love it more that the cougar ..

 

this sounds just like mine...havent checkt the manifold for glow but its extremly hot and sounds so too.../even more than before) and i have no problem reving i N , but as a press the pedal i jerks as i it dont get any fuel.
first it were only above 4000 so i thought sec. injectors but last time i drove it began att 2500 so i guess thats not the case.
only mod is open filter but i have a stash of thingts to put in as soon this is fixed so PLEASE.... i really need help.

have looked around the forum and found about 20 things and it all just spinns around in my head right now.... dont have the money to change every part of the motor

RX7- 89 convert.

ps if you know of a write up of the things you recomend plz add a link....