i need help bad

my car boggs out back fires through intake when i hit the gas
runs good at idle
timing is right air flow is right fuel pump is new tps is new cts is new fuel filter is new spark plugs are new distributer is new

the cat is new as well but it still boggs out when u press about 50% on the gas pedal in any gear at idle it will go to 3500rpm but thats it it boggs after that i can not find this problem please help i have done what i can this far now i need a chevy person to tell me whats wrong with this car

 

Im a BOP person but

just for giggle, run the car in the dark with the hood up and look for leaking spark. Then mist water from a spray bottle on ign stuff and look again.

since you say timing is right ^

 

I'll help you massivedodge, but only after you edit your post by adding periods & commas. You had no problem capializing your name, so give that a try too. Its damn hard to read.

 

I'm also having the same problem as well and its driving me nuts.

i fixed my fuel leak with a 2.9L injector swap and fixed my fuel pressure with a new fuel pump, but everytime i rev the car to about 3000 - 3500 its back fires through the intake. Also when i hold the rpm's steady at about 2000 after a few seconds it drops back down to 1000 and below by its self.

Any thoughts would be appriciated, Thanks in adanvce..

 

I'm a Pontiac person will that count?

Dodge you said you have a new catalytic convertor; why? Did the old one clog?

 

MASSIVEDODGE so I'm hoping this solves you problem as it did mine today....
Do your self a favour and get a timing gun and check your ignition timing.
Mine was way off and was giving the same symptoms. After a bit of tweaking the car finally ran right and I can rev way past 3000 rpm without any intake backfire.

Hope this helps... Never know till you try

 

Like kishan said, gotta be timing issues, mine was 180 off, and did this.

 

mine was only a little off and did that, the hold down wasn't tight enough and it moved only about a inch in each direction, one spot it ran awesome, other like crap. and it went back n forth on its own it seemed, making it hard to figure out.

 

lol commas and periods arnt things i use
but i did disconnect the MAF and the car runs awsome as hell so that was the issue might be the sensor or a ground short who knows once i replace it if it still does this then its gotta be a short

thanks everyone you dont know how much reading i have done LOL

 

and tom P no the cat was replaced by the prvious owner i pulled it out to check just in case he lied but sure enough its clean as hell