just had my DC2 GSR turbo'd with a TD04, 3" exhaust w/dump-pipe, custom manifold, larger injectors and front-mounted intercooler. the system is being run buy an EMS stinger ecu and is currently getting a thorough tune. whilst tuning, we have discovered that as the turbo comes on boost, it misfires. cars stutters and is generally running like a *****.
changed the spark plugs, still nothing,
changed leads, still nothing
change the computer, still nothing...
injectors are totally new...

what else should i be looking at??? what other causes may there be...?


please help!!!

 

are you running stock ignition? check or swap the coil

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by one more chance &raquo;</TD></TR><TR><TD CLASS="quote">just had my DC2 GSR turbo'd with a TD04, 3" exhaust w/dump-pipe, custom manifold, larger injectors and front-mounted intercooler. the system is being run buy an EMS stinger ecu and is currently getting a thorough tune. whilst tuning, we have discovered that as the turbo comes on boost, it misfires. cars stutters and is generally running like a *****.
changed the spark plugs, still nothing,
changed leads, still nothing
change the computer, still nothing...
injectors are totally new...

what else should i be looking at??? what other causes may there be...?


please help!!!</TD></TR></TABLE>

Whats your plugs/plug gaps?

 

I had the same problem, I advanced timing 3-4 deg. and leaned out fuel mixture car runs awesome, no backfiring no fuel bog downs....

 

im running stock ignition for the time being...

not sure what gaps.......

anyone else...??is this purely an ignition issue or can there be other factors????

 

Start with spark plug gaps, try around .025 and if the sputter is still there it is probably your coil. I had the same prob today its is already fixed. Bad MSD coil

Also make sure you are using map as load. I have tuned a couple ems systems and for some reason the it had TPS and MAP as load with SOME base calibration files.

 

thanx bro....thats the answer i was searching for....

cheers...