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Old 04-02-2019, 06:45 PM   #3030
Bunsin
Car Goes Bang
 
Join Date: Sep 2017
Drives: 2013 FRS, 2014 BRZ
Location: Indiana
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Quote:
Originally Posted by Mr_Eyo View Post
Pinch test for the bypass valve actuator vacuum hose is here by @BirdTRD:
http://www.ft86club.com/forums/showp...postcount=2368

I'm not leaking there. I've been doing a lot of searching on this and looks like 2 odd things that seem overlooked a lot could be causing this: low battery or bad PCV.

My issues got worse on E85 too. Have you been having issues starting, like it takes 2 crank attempts every time? I have and I think I've just about drained my OEM battery: my voltage is like 11.90v. I'm going to try a different one to see if anything changes.

For the PCV there are a couple posts around here where people have replaced the stock valve with one from a WRX/STI. Apparently, our stock one wasn't designed to see boost. These guys reported replacing the valve and their problems went away. The Jackson Racing kit bolsters the stock PCV with another series check valve.

The other observation is the DT tune v25.20 I'm on appears to be well behaved on the DW 700cc/min PIs, but appears to be having issues only when on DI only. I'm going to try to ask Bill to check it out.

No issues starting (in fact idle is pretty good but a little high). When I did the pinch test last night there was a change in the idle RPM so I'm dead certain it is the actuator. It got entirely worse this morning during the aborted drive to work as it finally lit up the dash. The car was not behaving well at all so I suspect that the tear in the diaphragm got worse. Part is being warrantied by Edelbrock so I'm just in it for rush shipping... Hopefully that is the only leak and I'm not chasing down other things. I should get some of this sorted and then see if Zach can move me up to the latest tune.

Shout out to the guys in the tech center at Edelbrock for the rapid response.

EDIT: Just checked and it threw a P0171 so just as expected

Last edited by Bunsin; 04-02-2019 at 07:15 PM. Reason: Add engine code
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