origianly posted at az2gnt:

when i drive right now it gets all jerky when i am slightly on the gas. and when i come to a stop the car idles real rough and it has even stalled out. when in neutral (automatic) and it idles real rough my air/fuel gage goes to rich. also when i let of the gas at high rpms to blow off it has a slight back fire, im pretty sure. hard to tell with the exhast.

alright i got a new PCV valve, changed my msd coil and wires back to the stock ones, pulled and checked the spark plugs. any other ideas the car feels like it is getting worse.

Story on the car: turboed it about a year ago. i have 81,000 on the motor. i have the walbro fuel pump and the fmu that came with the star kit. missing link, aem cam gears, msd coil and wires, new head gasket, new pcv valve, and i just changed the oil. the car has NOT been tuned since i went turbo (cant find anyone to help me with it). the tranny fluid is past time to be changed and i have not changed the fuel filter since i have owned it (due to lack of money).

i have been using cheveron with techron and the cheveron fuel injector cleaner the last few times i filled up and like i said early in this post i had a chemical clean for carbon done a few days ago. i am running out of ideas what it could be, i even did a search on 2gnt and came up with nothing. anyone have any ideas or have any spare time to look it over and see what going on. if so let me know. cell: 623-308-2732. Thanks
-Todd

Star Stage II, Greddy Type S, ADFX 3" DP, blah blah blah

any cel's/.... maybe 02 sensor.

^^^ agreed. Check o2 sensor.

**********************************
Current Mods:
AEM V2 intake, MP 60mm TB, Accel 24lb injectors, Crane #12 cams,Ross forged 10:1 pistons, Eagle H-beam rods, ARP head and main studs,
Ported and polished head, Crane valve springs, PT rockers and lifters, MSD coil, Accel wires, AFX underdrive pulley,
DC sports ceramic coated header, Ebay testpipe, Apex-i N1 catback, 255 lph fuel pump, Apex-i SAFC, Spec Stage III clutch, Phantom Grip,
full Energy Suspension polyurethane bushing kit, Tokico springs and blue shocks, Russell steel braided clutch and brake lines,
17" Koning Imagines, NOS 100 hp direct port N20 kit

o2 sensor, check your cam gears one could have come loose and be off, also check your plug wires.

myspace.com/coastiecobb

Have you tried replacing the filter on your missing link?


Star Stage II,Vecco SS heatshield,OBX intake,OBX fuelrail,MSD coil & wires,Epac voltage sys.,Hyperground sys.,Eagle rods,JE pistons,ARP studs,meling oil pump(Ceramic coated DP,wastegate tube,Manifold & turbo housing)

sounds exactly like what was happening to me when my fuel filter went. tried all the things your suggesting and then finally changed that out and it ran bad for about 10minutes and then everything smoothed out. funny thing is i had just changed that fuel filter (cheap autozone filter) only 9k miles before it went bad again.

*98 eclipse rs
*2005 srt4 (screw the warranty let the modifications begin)

Turns out it was the star FCD crapping out on me. took it off and everything runs nice now.
-Todd

Star Stage II, Greddy Type S, ADFX 3" DP, blah blah blah