CarrelliEvo8

Hello! My name is Michael and I have a question for all you guys. Recently I had put a 7163 borg warner turbo kit on my evo 8 pushing 500 whp. I made a mistake with this by keeping stock internals. A few months after I had spun a bearing.

6 months later and an empty wallet, I got my car running again, with Manley Rods and JE pistons, stage 3 head, and a machined block and head. Turned the boost up to 33 lbs.

Car was running great, now im having a problem and I don't know what is causing it.

While my car is moving at idle (in neutral coasting), the RPMs bounce between 1 and 2 thousand. Then when I come to a complete stop, The RPMs hang right at 2k.

While im in high boost, past 5k RPMs, the engine sputters and does not give full power.

I have heard these problems could be a vacuum leak, boost leak, bad EGR solenoid or spark plugs. Please help!!

kaj

iTrader: (60)

Vacuum leak. One of your lines has come off.

CarrelliEvo8

i checked every line i could find and nothing is off.

kaj

iTrader: (60)

Do you smell gas? Have you sprayed carb cleaner around the seals and lines?

kaj

iTrader: (60)

Funny thing: my car actually started this last weekend LOL
no time to diagnose. Hopefully soon.

CarrelliEvo8

I do not smell gas and I haven't gotten to doing that yet. but either way I don't see any loose or cracked hoses

kaj

iTrader: (60)

You don't always see them, is the only reason i ask. I've had a couple that looked fine until i actually pressurized them.

Good luck, man. I hope you figure it out! I'll be checking mine soon, too.

4b11slayer

Have you checked egr vac lines behind intake manifold?

Ev0ikon

iTrader: (18)

The majority of the time a leak happen only after the system is pressurized. You can't "SEE" the cut/crack in rubber/silicon lines easily.