I've been having issues with my Evo8 '03. First, what I have.

BR Delux FMIC
BR Downpipe
BR Lower/upper intercooler pipes
Greddy boost guage

ordered
forge MBC
forge diverter resirc

When I drive I hear a loud whistle whenever my car reads 0 bars on the boost guage. It happens all the time. It's very very loud. The first thing I think is a boost leak. So I looked at all the connections to make sure everything physically feels and looks tightly on there. Everything checks out ok. I had my brother (a tech for land rover) do a boost leak test. I had the car smoked. but we werent able to pressurise the system. We didnt see any smoke come out of anything other than the intake. So we had a sonic noise reader to try and find where the sound was comming from. we pinpointed it by the turbo and the stock DV.

I have 3 questions, a. could my dv have gone bad? I have almost 20k miles on the car.
b. could the turbo be bad? I dont really think that could happen. but I have reg. maintaince done to the car such as oil changes, etc...
c. where can i buy a tester so i can pressurise the system to hear where the whistle noise is comming from?

If there are anythings I might have overlooked please let me know or something. I've searched on the forums and didnt find anything like this issue. I still figure on a boost leak at the DV. So I ordered a new one by forge.

Thanks,

SH

 

Your engine apparently needs to be in the correct position, pistons and valves, for the pressure test to work right (or so i'm told). A quick search on leak testing will yield some results of interest :P


1) Pressurizing the system will let you know if your DV will hold boost or not.

2) Highly doubt the turbo died over a pipe install..

Build yourself
3) http://www.vfaq.com/mods/ICtester.html

 

good to see another member in the cinci area. to answer your questions yes your bov could be leaking. but most likely you have a leak. search boost leak tester. there is a guide to making one for less than $10. ill try and find the link.

 

there you go. easy to make and will let you know where the leak is coming from

 

Check the flange mating the Buschur turbo outlet pipe to the compressor housing. Was this recently installed?

 

Thanks for the replies. In responce to your question, the interecooler and pipes were recently installed. I would say about 1 and 1/2 months ago. I had it installed at a local shop. My brother has had work done there before. Never had issues. The whistle noise started when I went down to tail of the dragon with other fellow evo's. I noticed it on the last day of hard driving. It didnt get really bad untill a few days ago.

 

You have an FMIC upgrade with piping and a downpipe, but no full exhaust or tune? What in the world....?

Not sure what that smoke thing was, but checking your connections does nothing. Until you've done a proper boost leak test pressurized to 25psi or so, then you haven't dont anything.

 

Hey Warr, isn't pulling the starter required in order to get a proper seal for the Buschur turbo outlet pipe to the turbo? I remember people having this whistling issue when they didn't get an even seal on the flange to the turbo eventually allowing it to warp because the starter wasn't removed during install.

 

Any LICP requires attention in order to ensure a proper seal when replacing the compressor outlet pipe, but I don't recall having to remove the starter in order to do it right.

 

I bought the car used a short while ago. The previous owner had a 2.5" aftermarket exhaust system with tune put on there. I upgraded the downpipe to a 3" and never finished due to personal reasons. I am finishin the 3" catback in the next few weeks when I have time to work on ze car.


Yes, I know the upgrade is backwards. I have been looking at retuning the car but I'm confused on what I would need to do in order to log the data and send it into jster for tuning.

thanks,

Scott

 

You don't have to do that to get tuned. Just go to a tuner around you. Jestr is relatively new to the scene. The are several big time Evo tuners who have been doing it for years. Mail in your ECU to Dynoflash or request an e-flash from him. It doesn't require logging, but that does allow for finer tuning, which can also be done in person if you drive to a tuner, or if one visits your area.

 

i pmd you juicebox

 

I did a boost leak test finally today and found that I have a leak on the turbo outlet. It's between the turbo and the LICP. I'm assuming its a bad gasket. So I'm gonna hit up the dealership and get a new gasket to get it fixed hopefully. I also installed the Forge MBC and BOV RS.
The only issue I have though is with the MBC it is at the lowest setting and I'm still hitting 1.2 bars. Sometimes it spikes and I hit fuel cut. I double checked all the hook ups and it looks fine. I would just assume I need a tune to fix that. once again, any input would be nice

 

So I fixed the boost leak issue as seen from my above post. I'm still having issue though with the Forge MBC. The MBC at its lowest setting gives me well over 1.5 bars. I've checked all of my connections 3 times. I've used all new lines. My MBC is hooked up BOV T method. That's the only method I have because the BR LICP does not have the turbo nipple on it. I've also changed springs in the MBC as well. I'm not sure what other options I might have. Any body have any other ideas? I'm stumpped.

thxs

 

this is how you hooked it up? double check your lines