Finally got my RRM Stage 1 IC kit installed and running last night. I went for a drive, keeping it under 3000RPMs the whole time. It died twice, which is expected. I'm holding -20 vacuum at idle, but when driving the vacuum goes down to -25 at some points. Is this normal? Also, when I was driving to work this morning I pushed it a little more (not going above 3500RPMs) and boost went up to 6.4psi max. I thought the RRM kit was supposed to be at 5psi? I checked all my vac lines and all of them are connected correctly. The line going from the turbo to the waste gate seemed to be larger than the standard vacuum line on the BOV, could that be the culprit? Also, the BOV make a slight whistling sound off and on, which I assume is normal for bleeding off pressure.

It's going to be hard to take it easy for the first couple 100 miles, but I should be able to do it.

 

20inhg is normal for idle vac. It may occasionally drop slightly lower. I don't remember what's normal anymore, and my setup's a good bit different, so that could create minor differences. I don't know why RPM's are important though because the turbo doesn't see RPM's. If you're doing 7,000rpms and hitting 2lbs boost then the turbo isn't working hard, if the car's doing 3,500 rpms and you're hitting 6.4lbs of boost then the turbo is working hard(relatively speaking). If you're breaking in the turbo, keep the boost low rather than the RPM's. If you're breaking in piston rings, keep both low. At least that's what makes sense to me.

 

The rrm stage one kit can hit 7 lbs of boost, and the wastegate to the turbo should be a 3mm silicone hose. is it?

 

You mean 3mm ID right?

 

your vac. is good. anywhere between 18-20 is perfect and my car does the same thing when u let off the gas it will sometimes go between 20-25 which is normal for our cars!!!

 

yah its 3 mm

 

Ok, I'll lay off the boost for a while. I'll check the vacuum line from the turbo to waste gate and make sure it is 3mm. For some reason I think it might be a little bigger, which would account for the higher boost levels. Thanks for the tips guys.

 

the vac is normal, my car does the same thing when i let off. let us know how everything works out.

 

So say the vac line is bigger than 3mm, would it be a bad idea to leave it the bigger diameter? This is hypothetical, because I haven't checked it yet.

 

if ur boost gauge is in kj/cm squared, it should read .5 (intercooled) if its in psi it should read 7 (intercooled), what you should do is take break cleaner, and turn on the car, and spray break cleaner on all the vacuum lines and see if ne bubbles come out, or if the engine slightly revs. Das what i did.

 

Why should it read 7 for intercooled? I thought stage 1 IC was set at 5 psi, then stage 2 went up to 7?

 

If he had a boost leak he would not be reaching 7psi without some serious difficulty. Your vac is fine, don't worry about that. Why you're hitting 7psi on the other hand, I cannot say. Is it sustained or is it a peak/spike?

 

no stage 1 is set at 7 psi, stage 2 is 9 to 10 psi, non-ic is set at 5 psi

 

well i have nonIC and am running 7psi fine.

 

that is incorrect. stage 1 intercooled has the wastegate set at 5 psi unless you somehow got a 7 psi spring put in the wastegate instead or if you have an boost controller to turn it up to 7. stage 2 comes with a new spring to replace t he 5 psi spring with a 9 psi spring.