hpjunky98

iTrader: (3)

ok my friend is trying to get better gas milage out of his srt-4. he asked me if he gets a boost controler, if he could turn the boost down to almost nothing for daily driving. i told him i wasnt sure if the car would run correctly without alot of custom tuning. anybody know if this would work?

Korben

His wastegate spring is what controls his minimum PSI setting. If his boost is at the factory setting he won't be able to turn it down unless there is a spring that will allow less boost............

Assassin

iTrader: (3)

tell him to lighten up w/ his foot and he'll get better mileage!!!

hpjunky98

iTrader: (3)

ok thanks... i really know nothing about FI, so i wasnt sure.

smokinHawk

iTrader: (48)

best method would be to lighten foot, you can control the boost by not getting into it

surprisingly our ls1's get better gas milage

Turbo2.4Liter

tell him to upgrade his turbo he will get a lot better milage with a bigger turbo unlike the stock 16g that spools off idle

BLK85

iTrader: (1)

I didnt know the turbo was so small on them things. Thats smaller than the T-25 on the Eclispe aint it(I dont know about all the turbos).

Tell your buddy to ease up on his right foot. That does a wonder in any car.

98Z28MASS

iTrader: (6)

Yea a couple of my buddies have srt-4's, and for daily driving they just shift before their turbo spools up a lot, like a 2-2.5K rpms. Other than that as someone else said a boost controller wont allow him to run 0 boost as the turbo spools right from the exhaust gases and as Korben said is controlled by the waste gate spring, which determines the amount of boost. Now if he could find a way to make the waste gate dump all of the boost then i guess he could pretty much have an N/A engine (sort of anyways) but I have no idea what that would entail.

Turbo2.4Liter

no it's bigger than that about the same size as a 14b. but being a 2.4L is spools it like a 2.0L with a t25