Bad Idle after FMIC install

[STGGSX]

I have just finished my Greddy 24v intercooler install, and after the install, the car idles very odd. it goes from 1000rpm to 1500 rpm and keeps going back and forth, untill the ac is turned on or you put the car in gear and go. I wanted to know if this was just the ecu learning the new fuel curve or if i have a bad TPS. Please help Thanks

 

[ddavisaf]

The flux capacitor is having a hard time keeping up with the longer piping. Common problem actually. You'll simply have to add a bypass valve from your headlight fluid resiviour to your flux capacitor inlet and make sure that your drain tube isn't clogged or restricted.

And then after you get finished with that run a boost leak test, check your isc, and your tps.
http://dmtalon.v8eaters.com/ISC.html - ISC
http://www.plymouthlaser.com/tps.htm - TPS adjustment
http://www.vfaq.com/mods/ICtester.html - Boost Leak Test

 

[95talon_in_ma]

I have just finished my Greddy 24v intercooler install, and after the install, the car idles very odd. it goes from 1000rpm to 1500 rpm and keeps going back and forth, untill the ac is turned on or you put the car in gear and go. I wanted to know if this was just the ecu learning the new fuel curve or if i have a bad TPS. Please help Thanks

They didn't quite have the ability to learn curves back then. You have a hard coded set of matrixes that the ecu will read from depending on air temp, engine temp etc.

But with no ecu mods or fuel mods you car will not learn new tricks...

 

[somdturbo]

The flux capacitor is having a hard time keeping up with the longer piping. Common problem actually. You'll simply have to add a bypass valve from your headlight fluid resiviour to your flux capacitor inlet and make sure that your drain tube isn't clogged or restricted.

And then after you get finished with that run a boost leak test, check your isc, and your tps.
http://dmtalon.v8eaters.com/ISC.html - ISC
http://www.plymouthlaser.com/tps.htm - TPS adjustment
http://www.vfaq.com/mods/ICtester.html - Boost Leak Test

^Perfect response...

. Dont forget to lube the muffler bearings with synthetic 99 weight only!

 

[ddavisaf]

As a foot note, here is another helpful link concerning idle surges.
http://www.dsm.org/how-tos/tttt/tttt3.html

 

[doggo]

You can try here also for all things ISC-related:

http://www.stealth316.com/2-isc-iac.htm