Drivetrain 17% pulley boost

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Oct 5, 2010 | 03:38 AM

#26

daflake

6th Gear

Joined: Sep 2005

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From: Laurel MD

Quote:

Originally Posted by ViperGTS

Thanks so much for letting me know that. So, theoretically it says you get about 1psi. I wonder if our 03 is still the factory bypass valve, would we see more than 1psi?

The drop in gas mileage has me a bit worried. I do everything I can to eek every mpg out of the car that is possible. Hmmm.....

Efficiency and power or mileage? That is the question.

If you have the original 03 in there, it is likely toast and needs replacing. The DT valve is a nice one and you will notice a big difference in power and throttle response. If the valve is not working right, you will likely see a few more psi.

Oct 5, 2010 | 03:05 PM

#27

ViperGTS

4th Gear

Joined: Jul 2010

Posts: 324

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From: Illinois

Is there any way to test it out to see if it needs to be replaced? Can I just depress it and see how quickly it "pops" back up?

Oct 5, 2010 | 07:51 PM

#28

Silver253

2nd Gear

Joined: Jan 2010

Posts: 110

Likes: 1

From: Federal Way, Washington

just changed my bypass valve today I was getting 8 lbs max before. after Detroit tuned bpv installed I'm getting 16 lbs my car is like a bat outta hell.

Oct 6, 2010 | 03:48 AM

#29

daflake

6th Gear

Joined: Sep 2005

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From: Laurel MD

Quote:

Originally Posted by ViperGTS

Is there any way to test it out to see if it needs to be replaced? Can I just depress it and see how quickly it "pops" back up?

You can reach in there and press it lever. It should be pretty stiff and snap back right away. Most of the ones that I have seen that have been in cars that long are toast and not functioning up to normal levels. A new DT valve can give you a little yoyo at first, but it breaks down and normalizes over a little time.

Oct 6, 2010 | 08:13 AM

#30

ViperGTS

4th Gear

Joined: Jul 2010

Posts: 324

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From: Illinois

Quote:

Originally Posted by daflake

I will be doing this very soon. Is this an hour project or so to replace? I may be ordering one very soon.

A ScanGauge II can pick up psi of boost, correct? So, I can check the before/after.

Thanks for all the help!

Oct 6, 2010 | 08:27 AM

#31

daflake

6th Gear

Joined: Sep 2005

Posts: 3,925

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From: Laurel MD

Quote:

Originally Posted by ViperGTS

Give yourself more than an hour. It is not hard to replace but you will need to remove the airbox and IC to really get to it. Some even remove the throttle body.

Yes, a Scanguage II can pickup the boost PSI and no problem with the help.

Nov 28, 2012 | 04:34 AM

#32

scoopy

4th Gear

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sorry to revive the thread. i have a 05 model and using the torque app at wot i get 16 psi is that ok? i have 17%pulley, ddm can, dt bypass valve, ati and jcw injectors with stock tune