So my car was at the boy shop for about 1 week. After i got it back and started it up i noticed that the RPMS went up to 2900RPM and then dropped to 1800 untill the car was warm. It also idled alot higher for the first few minutes of driving. this is in 40 degree weather.

Its been 2 weeks, and everytime i start my car (after its been sitting for atleast 4 hours) the rpms rise to almost 3K for a slplit second. Is this normal?

My mods are: MREV 2 ,MD 5/16th copper iso thermal spacers, z-tube popcharger, and resonated test pipes

Before it went to the shop the rpms would just barely go above 2k at start up.

 

This may be a long toss, but have you checked the idle positioning sensor?

 

I thought it was normal? Mine also hit 3k in the morning..

 

It really depends on the ambient temp outside. Here in SoCal mine doesn't go over 1300'sh during a cold start.

 

wow 3k sounds extremely high lol. that's just from my idling experience. might wanna do that idle reset that u are supposed to do after installing MD spacer.

 

My coupe is garage kept and it never dip below 50 degrees, cold idle is below 2K RPMs and then it drops to 600 RPMs within 5 minutes. 3K RPMs is way to high, try resetting your ECU or disconnect the negative side of your battery overnight....couldn't hurt!
Gary

 

maybe vacuum leak?

 

im not saying it idles at 3k, it just goes up to 3k when i first start it for a split second.

After about 10 min it idleas at 600. but wile its cold it idles a bit high at 1000K