Restrictive exhaust?

 

3.5 inch downpipe test pipe and racing beat car back. The exhaust system flows well. Going to try to figure out how to post pictures of the wastegate plumbing. I have done a little research and mine not plumbed the same way

 

 

Pictures of my set up

 

Bypass the BC as previously stated.

 

Ok. So I replumbed my wastegates. I did a few runs and it appears to work well. I have yet to do full throttle pulls. I will send pics to see if someone can confirm if this is right before I do wot run.

 

I took the fittings and hoses from port 2 of the bc and placed them in Port 1.

 

 

Update so I re plumbed all the hoses thanks to a lot of help from the rx7 community. This is what I did. Hose from turbo to two a t fitting /port 1 on bc/ hose from that t to side mount of first wastegate. Hose from side mount of wastegate enters side mount of second wastegate. Hose from port 3 bc/ to a split fittings which two hoses exit. One hose to the top of 1st wastegate and one to the top of wastegate two. It's seems to work a lot better but I have yet to have the ***** to do a wot. Please chime in if This sounds right.

 

Damn drove the car today and once again it started the same b.s. This is driving me crazy

 

Update!!! Finally ran wastegates without b.c. The car held boost through all the gears at 11psi with no problem. I am not sure if there is something wrong with the b.c or if it is just not set up correctly. I do know that it is not the wastegates. With the b.c I am setup for 15psi

 

all those AN fittings looks like a nasty mess of overcomplication and plenty of potential failure points.

 

Update!!!! Removed the b.c and ran the car. The car ran a solid 11 psi 1st through 4th.😀😀. Well it appears it is not the wastegates. Hmm guessing it is the b.c. don't know if is faulty or just not programmed correctly.

 

what boost control head unit are you using?

 

The latest greddy

 

i don't have any experience with that one then, but you should be looking at gear judge settings as well as any RPM based duty cycle mapping.

as well, verify your boost gauge is reading the same as your boost controller. or at least very close to it.

 

Yes it is a little complicated but I assume they where used vs vacuum lines to keep them from popping off and for durability in the heat. It took me a while to understand how it went but I see where and how it works. Next I am going to route it to the b.c with the b.c turned off.

 

This is a lot of fun. Not lol

 

welcome to my life for the last 15 years, and all i got at the end was a neglected car and a bumper sticker from everyone else's shop.