1.5T Turbo Flutter after Intercooler Install?

[Feddy_Ace]

Hey guys. I was checking to see if anyone has run into this. I noticed that after my Rev9 intercooler install that I get a bit of turbo flutter after I let of the throttle quickly. Has anyone else had issues with this or found a fix? I’m just running the intercooler and intake, no BOV or anything.

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[CAPTS]

double check the hoses & clamps ?
i had that similar IC no flutter at all.

 

[Feddy_Ace]

double check the hoses & clamps ?
i had that similar IC no flutter at all.

After some research I might need to gap my spark plugs down. I was figuring this might be the culprit, so I’ll try that and see if it works.

 

[Feddy_Ace]

UPDATE: FIXED

So I figured the plugs were the culprit and that turned out to be the case! I gapped my plugs down to .28 and all the flutter/shudder went away instantly. I tried to throttle on/off hard and recreate it, but nothing. Problem resolved.

 

[kytos]

how plugs fixes turbo flutter?

 

[NoelPR]

how plugs fixes turbo flutter?

Seems to be an extreme case of "placebo effect".
Needs further analysis.

 

[Feddy_Ace]

Seems to be an extreme case of "placebo effect".
Needs further analysis.

I think flutter was the wrong description. It was more of an engine stutter and a “pffsss-tt-tt-tt” sound coming from my intake that I haven’t really heard before, but I can contribute that to the new intake filter I have. There’s no placebo about of this. I could re-create the stutter on command by just getting into boost and letting off the throttle fast. After gapping down the plugs I couldn’t do it no matter how hard I tried.

I found this post in an Audi forum that described exactly what I was experiencing and properly gapping the plugs solved it for them too:

https://www.audiforums.com/forum/b7-models-71/weird-stutter-while-accelerating-207796/

 

[kytos]

that's usually wastegate flutter that happens sometimes and it sounds more with an intake

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