so i got my turbo downpipe redone and a seperate wastegate dump tube fabbed up. i also had a blow thru-maf setup installed. the car sat for about 2 days w/ the battery unplugged so the ecu has been reset. upon completion of new exhaust set up and the blow-thru maf, the car runs crazy rich, and now stumbles and jerks and basically feels like its going to cut off at partial throttle,

at full throttle it pulls like a bat outta hell and goes into boost instantly like it normaly would. and b4 i had this done my car idled at -20 vac on my boost gauge now it idles at 10-15 which suggest a vac leak. its late so im gonna check these things out 2morrow but if any1 has any ideas other than the obvious vac leak, blown coupler. please help me out.

i would like to have my car retuned for more boost in the next 2 weeks but its hard and embarrassing to even drive down the block at this point....its tuned on a aem/fic btw

 

tune should have stayed saved on the ecu. might be a hose but also since you have less restriction you'll run a little rich. same with the boost less back pressure but more power at the same or less psi. just get it retuned it'll fix the rich problem.

 

umm after switching to a blow thru maf setup you should get a re-tune.

 

Your fuel trims are probably crazy off in partial throttle. Re-tune for blow through.

 

i guess im gonna have to street tune it around the neighborhood, cause i really cant drive this car in any kind of traffic, hopefully i dont get a ticket lol, this sucks.......

 

+1, should have RE-tuned after switching to Blow-thru setup.

 

i had no idea it would be this bad, i actually thought it would make it alot better off the jump, (stumbles,hesitation) but its all good i got my uego and a laptop, and aem has a step by step video on how to adjust everything so i should be good after some adjustments,many advice on the maf clamp???

 

*any advice on the maf clamp??? i sure could use the help..thanks

 

Follow the directions from AEM for the F/IC. Good info. Should be sticky'd in the F/I section.

 

wish me luck, i should have pics of the new setup 2nite, hopefully i can drive the car home

 

the whole thing ssounds to me like a vac leak, but i can def tell you a blow thru setup requires a retune if u were tuned for draw-thru.....all fuel trims will be different even idle....

yes wot may feel fast and strong but it needs to be retuned also

 

ok, so we were messing around with the fic yesterday, the uego is reading 10.00 thats as rich as it gets, how do i change the fuel trim and where does it need to be changed?...we copied the clamp that aem had on their tc and the idle smoothed out alot but its still reading crazy rich...on my ignition and fuel maps there is nothing being added or taken away untill about 3k rpms...im really confused,

everything looks like the ecu should have control till about 3k, where i would start to make boost but its still pig rich....

 

Try the aemfic basemap on dezods website?

 

i didnt know they had 1, will this work for a blow thru setup??

 

lol, anythings going to work better then what the ____ you have.

 

well my tune was perfectly fine and made 269whp 255tq on 8psi, but that was on a drawn maf thru the turbo intake,

now im have a blow thru setup and everything is flipped up

 

a blow through will not change it that much were it idles at 10.

 

well its def running richer than it ever has b4,

how should i go about changing the fuel maps?

what should my injector response be set at?

 

Why dont you get it tuned?

 

i tried calling u yesterday also, i want to have u do the tune, but i gotta get this thing running right, or else i have no way of getting the car there lol