The other day I took off my stock intercooler and cleaned up my upper intake manifold. I put it all back together, and made sure all the hoses were back and everything. Then started up the car. Wierd thing is, it will not idle normal at all at 750 rpm like it did previously before i did all this. When it fully warms up it will bob' from 750 down to about 300 rpm sometimes. Not only this, but when i get on it on the highway and boost hard in 4th gear, it will hit a brick wall at 5k rpm and will not boost anymore. I've checked and checked what could be the problem. I thought forever it was a vac. leak somewhere that i forgot, but i can't find one anywhere i would of taken off. Anyway, it's getting really annoying, and I don't know what to say is the problem. Anybody ever had this happen to them?

What to do?

thanks

 

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