 Why is that boost different in lower gears vs higher gears?, Gen4 3sgte. Turbo noob |
 Apr 29, 2016 - 12:48 PM
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 Enthusiast  Joined Mar 8, '12 From Hanford/Fresno, Ca Currently Offline Reputation: 20 (100%)  |
Just swapped in a 3sgte gen4 into my 97 GT. I was looking around to find the stock boost. I read we get peak boost at 14 psi in 3rd gear and up. But 7-8 psi in the 1st and 2nd gear.
Also why's it that it's different boost in the gears? What controls it or is it safe to make a mod to get even boost through the gears? I'm guessing that's what a boost controller is for? Sorry for the rookie questions. This post has been edited by ILoveMySilly97: Apr 29, 2016 - 12:49 PM -------------------- |
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Aug 30, 2016 - 2:32 PM
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Enthusiast Joined Feb 23, '10 From Vancouver, BC Currently Offline Reputation: 0 (0%) |
QUOTE (Batman722 @ Apr 29, 2016 - 9:10 PM)  Did you disable the TVSV ? That sounds like your problem. http://www.mr2oc.com/61-3sgte-turbo/369593...v-location.html Having the tvsv hooked up will restrict boost in the lower gears. Easy mod. This is the reason why with everything stock, boost in 1st and 2nd is limited. It is controlled by the TVSV. You will boost higher in higher gears due to the higher loading in higher gears, but the reason you are reading that there is a difference is due to the TVSV. I have a bolt-on st205 and boost in 1st and 2nd is around 10 psi, 13 psi in 3-5. Nick |
Posts in this topic
ILoveMySilly97 Why is that boost different in lower gears vs higher gears? Apr 29, 2016 - 12:48 PM
richee3 Longer gears make the engine work harder which spo... Apr 29, 2016 - 1:34 PM 98celi QUOTE (ILoveMySilly97 @ Apr 29, 2016 - 1... Apr 29, 2016 - 1:52 PM Box Yup all about that engine load. Apr 29, 2016 - 3:07 PM ILoveMySilly97 Aaaahhhh....I figure it was because of the engine ... Apr 29, 2016 - 3:38 PM Batman722 Did you disable the TVSV ? That sounds like your p... Apr 29, 2016 - 8:10 PM Smaay In amy's car, i removed all that crap. I have ... May 3, 2016 - 8:45 AM
malpaso Exactly as Dustin said. Bypass TVSV is the key. I ... Aug 31, 2016 - 2:24 AM |
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