The CEL went off after we changed the wastegate line to the IC pipe. He used all new vac lines so the one from the wastegtate to intercooler piping is a little bigger than 3.5mm that might also be adding to the overboost problem. The other nipple on the top is VTA.

BOV could very well be hooked up wrong.

I'm going to take pictures tonight and post them up it might be easier for someone to circle the problems.

 

Well I went over the vac lines in the engine bay and it all looks fine. I cahnged the wastegate line to the original one (3.5mm) . I have not driven it with this smaller line hooked up.

 

shouldn't make any difference.

 

Nope it didn't.... I'm stumped.

 

you've reloaded RRM's default map right?

are you still over boosting? is the wastegate sticking open or closed? you can test this with a hand pump and some positive pressure.

does it sound like it's blowing off at all? that's problem #2, defective BOV. have you tried swapping back to the bosch unit, or did you install that one first to try and get the kit up and running?

if you find no mechanical issues I still think you should try clamping the MAF signal. ONLY if you don't find any mechanical issues and ONLY if you are not truly over boosting, merely getting some fuel cut. you may need a pull up resistor inline, but RRM should be able to tell about all that. it's part of the stuff split second told me though so I can't give you any more info. sorry.

 

Adam, you live very close to kelv.

my recomendation would be to either post details pictures of your setup, or meet with kelv and compair since your kits are the same.

to me it sounds very much like a vac line isint running to the right location.

 

Guys there is no CEL anymore kit runs fine just will overboost. I've checked every vac line they are all hooked up exactly like they should be. The car runs fine...and can boost just overboosts if your hard on it in third gear. I checked the wastegate with a bike pump and it opens and closes with no problems.... the only thing we came up with was the manifold design and the wastegate can't keep the exhaust diverted but other people would be having that issue as well. It's not the BOV I know that for sure. Should I buy an even lower spring ? 3.5 psi ?

 

Adam, are there 2 ports on your WG?

 

Yes...and the line is not hooked up to the wrong port I triple checked that....

 

So you're saying you have only 1 line going directly from a pressure signal on the IC pipe/intake manifold to the side port ONLY on the WG and that the WG opens when pressure is applied to the side port on tests, yet it's overboosting?

Impossible.

 

Tell you what.
Remove the WG completely & plug the vacuum line. Then drive the car and tell me how much boost you can make.

 

Without a wastegate it would just boost until 30-40 psi and blow.

 

Quite the opposite.
I don't want to sound like a dick, but I believe you have some misconceptions on how the WG system works.
Just take it off and look at the hole in the manifold. How can enough exhaust make it to the turbine to spin it?

You *may* be confusing the WG with the BOV?

 

I know thats what I keep saying to myself to but I highly doubt my Defi boost gauge is lying. It runs right at idle and 0 PSI before starting...

 

The exhaust flows directly into the turbo. The wastegate opens at 5.25 psi allowing the exhaust to bypass the turbo if the wastegate isn't there to open won't it just overboost even worse ? Whats the point in removing the wastegate ?