mk3 supra blow off valve

2fast4u · 04-25-2012, 06:04 PM

how would i install a blow off valve on a 1990 toyota supra turbo. its got a 7mgte motor. please help i searched everywhere if anyone can give me a detailed instruction.

MJG · 04-25-2012, 06:19 PM

Who is the BOV manufacturer?
Do you have the stock plastic IC tubing or some aftermarket kit?

Green7mgte · 04-25-2012, 06:56 PM

stock 7mgte models use a kvam. with RBV. youd need to tune your decel air or go MAFT if you didn't feel like stalling every time you shifted.
hell i dont even know if tuning your decal air would work.. any thoughts on that?

cre · 04-26-2012, 12:16 AM

I'm pretty sure the SAFC II has tip-in and tip-out adjustments. I know the MAFT Gen II and MAFT Pro do.

2fast4u

, are you looking to install a BOV/BPV which vents to atmosphere or replace the stock unit? Venting to atmosphere will most likely result in driveability issues unless you add some electronics to tune for the discrepancy when the BOV discharges. Replacing the OEM unit should be obvious unless you're looking to use a different make/model.

Most aftermarket models will require a bung to be welded onto the intake piping somewhere between the intercooler and throttle body. The BOV/BPV often comes with the bung supplied. Get it welded in somewhere and pay attention when deciding on the location that you don't put it somewhere that's going to be problematic once the BOV/BPV is attached. Then, connect the vacuum signal hose which ran to the stock BPV to the new unit and if needed tune the new unit accordingly.

04-25-2012, 06:04 PM	#1
2fast4u 3" Exhaust Join Date: Mar 2012 Location: kent washington Posts: 57 Blog Entries: 1	mk3 supra blow off valve how would i install a blow off valve on a 1990 toyota supra turbo. its got a 7mgte motor. please help i searched everywhere if anyone can give me a detailed instruction. __________________ 2 fast 4 u

04-25-2012, 06:56 PM	#3
Green7mgte Supra Forum Moderator Join Date: Nov 2009 Location: Green-Ohio Posts: 1,297	stock 7mgte models use a kvam. with RBV. youd need to tune your decel air or go MAFT if you didn't feel like stalling every time you shifted. hell i dont even know if tuning your decal air would work.. any thoughts on that? __________________ 92 Ma71 7mGTE Auto. SafcII Supra FAQ Supra MKIII FAQ Classified Section guidelines :

04-26-2012, 12:16 AM	#4
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	I'm pretty sure the SAFC II has tip-in and tip-out adjustments. I know the MAFT Gen II and MAFT Pro do. 2fast4u , are you looking to install a BOV/BPV which vents to atmosphere or replace the stock unit? Venting to atmosphere will most likely result in driveability issues unless you add some electronics to tune for the discrepancy when the BOV discharges. Replacing the OEM unit should be obvious unless you're looking to use a different make/model. Most aftermarket models will require a bung to be welded onto the intake piping somewhere between the intercooler and throttle body. The BOV/BPV often comes with the bung supplied. Get it welded in somewhere and pay attention when deciding on the location that you don't put it somewhere that's going to be problematic once the BOV/BPV is attached. Then, connect the vacuum signal hose which ran to the stock BPV to the new unit and if needed tune the new unit accordingly. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

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04-25-2012, 06:19 PM	#2
MJG 3" Exhaust Join Date: Mar 2010 Location: Washington State Posts: 125	Who is the BOV manufacturer? Do you have the stock plastic IC tubing or some aftermarket kit?