Couple issues after dyno runs...

[mk3-4-me]

Ok so I recently got on the dyno to see what I'm running. It was all good onthe dyno and right after, but when I came to my first stop sign my idle stuck at just under 2k. Then at another stop sign it would start to surge from about 1.2 k to 2k. Runs great still but just when I come to a stop.

Now if I tap the throttle quick to about 2k and let it sorta have a strong vacuum pull instead of just letting off the gas, it will fix it's self and idle normal. It's just every time I get out of gear and idle, it will do one or the other depending on how I let off.

I only have code 11. I'm going to double check all my grounds, but idk if it wouldbe it. It runs great otherwise.

I've checked for a vacuum line that might of popped off or leak but nothing that I saw.

Just wondering what you guys might think it could be.

 

[mstgeer]

Check the lines and wires to the ISCV

 

[topekamk3]

might also make sure no dirt is on the afm, i've seen the cause rpm surge at an idle but everything is fine under load

 

[mk3-4-me]

Ok will check ISCV... And I dnot have an AFM anymore. I'm runnin maf-t basic in
Blow through

 

[nosman4]

I would check and make sure that your throttle plate isn't sticking open. I had a high idle issue on my car and it was because of the linkage being sticky. If you let off fast it would be fine, but let off slow and it would stick. I lubed it all up and it was better.

 

[mkiiichip]

And I dnot have an AFM anymore. I'm runnin maf-t basic in Blow through

Doesent "blow through" mean the AFM is in the intercooler pipes?

 

[barkz]

not to steer away from the subject but, numbers? lol

 

[mk3-4-me]

391 rwhp at 15 lbs... can't wait to crankit up some more.