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No I scanned it with my scanner nothing pops up at all....

Yea it will like start building up and idling high and if I don't let off the throttle it will backfire

Fuel psi is all good, I do not have a scanmaster.. I'm getting spark on all cylinders. Coils are good... Has live wire setup aftermarket maf...

HI HERE IS A VIDEO OF WHAT MY CAR IS DOING KINDA LIKE OVER BOOSTING....I CUT THE CAT OFF THINKING THAT WAS THE PROBLEM..

Hi i have a 84 gn stock except for maf and lives wires need some ideas on what i should do next ?

Hi,my gn is all stock except for aftermarket maf and livewires...what could i do to gain some extra performance?? Thanks for any advice

Yea I can't seem to find a Downpipe for it thoe I only found one at goody parts and there asking almost 600 pricy..lol

Yea I called really good deals they have 3 different styles violater which is x piped..street pro and race pro in just debating on which is better they all have a little different tone.. There saying 2.5" or 3" on it but I'm figuring which I need... :)

i have a 84 gn im wanting new exhaust and a 3'' downpipe and wondering were a good place would be to buy it...thanks alot

Ok thanks alot for all your help...

*meaning sorry

Yea what's ur waning of kr?

Car will fall on its face between 3-4k sorry about the other post.i don't have a scanmaster but I did put it on my snap on scanner it has no codes if I go into data display at an idle it says it's burning lean and if I drive it it says it is burning rich...if I come to a dead stop and hammer it...

lol thanks i will do that

Hi,im new to the site i love it!!! I have a 84 gn just purchased it motor has never been touched besides maf and livewires...at about 3-4k rpm the car will fall on its face i checked the fuel pressure it reading between 30-40...im thinking maybe the cat??help would be nice thanks so much.happy...

thanks it looks like they have what i need....:)

Hi i have a 84 gn i ordered 42ib injectors,hotwire,and new 255 fuel pump so im guessing im going to need a chip burned for it where can i get one made???is there a site or something thanks..happy holidays

HI,IM NEW TO THE FORUM LOVE THE SITE.......I JUST RECENTLY BOUGHT A 84 GN CAR IS IN GREAT SHAPE 114K ORIG MILES MOTOR IS ALL ORIG EXCEPT FOR NEW MAF AND LIVE WIRES. AT ABOUT 2-3K IT WILL FALL ON ITS FACE.I DID A FUEL PRESSURE TEST ITS BETWEEN 30-40.IM WONDERING IF IT COULD BE MY CAT BOOST...

Hi I just recently purchased a 1984 grand national it has a live wire setup new maf.. In wanting to gain some hp and some ideas and suggestions would be great let me know what you guys think