Originally Posted by
Bob_Ham
I have a 2005 NA Limited Roadster, put the MagnaFlow cat-back exhaust on about a month ago. Got my 74mm MB TB and Needs Wings single CAI installed this past Friday, and threw the updated EuroCharged tune into the computer. Car runs great, sounds great, and performs great... most of the time.
Every once in a while, I'll find it idles high, like 1500rpm compared to the normal 750-800. Some times it does this right off start up, some times it does it while driving / in between shifts (if I hold it in neutral for a while), or at stop lights. Some times it goes away on its own, some times I can load up the engine some and force it down and it stays, and some times I have to cycle the car off / on and it goes back to normal.
As I changed 3 things at once (TB, CAI, EC Tune), I can't say for sure what the actual issue is. I doubt the CAI did it, unless I screwed something up with the MAF and it's causing an issue.
Any thoughts?
-Kevin
Did you happen to ever figure out what the issue was? was it the TB? I am having a very similar issue and ive replaced my breather hoses, quadruple checked all for any leaks, replaced o ring on tb, replaced map sensor, tried a new accelerator peddle assembly. All that's left is a new TB that I can think of unless somehow the valve covers can cause a vacuum leak. I just ordered a new 74mm tb, I put a used on one a year ago and hoping it just went bad after this. My idle just started t hover around 1700, but only sometimes, other times it would be normal, other times it would rev up and down, and sometimes if i rev it it will just stay at a high idle. Was the TB your issue?