when im doing city driving with my turbo swapped 2.2 first gear no boost as soon as i shift to second its 7 psi (max boost) same with 3rd

while highway driving with my cruise set at 70mph it will boost to 0-2 and blow off CONSTANTLY. any idea how to fix that? its really annoying

other than those complaints/issues it feels awesome!

 

Tuning issue?

 

It must be pushing enough exhaust gases to keep the turbo spooled.

 

which means the turbo is too small???

 

glad to see you got her done

 

thanks, me too. i love it just dont like always being in boost...

 

i bet, i dunno why you would always be in boost tho. im interested in knowin why you are as well. someone answer this question

 

Someone did answer that question.

 

im leaning more towards the wastegate... im only running 7 psi with no boost controller. i am about to change a diaper then go install it and up the boost to 12 psi and see if it helps as well as put a muffler on lol my exhaust consists of a catted dp and a resonator then ~3 feet of open exhaust... add some resistance to slow down the flow.

 

The wastegate is always closed. How would a MBC change anything????

 

by giving me more boost and delaying the time it takes to open the wastegate. the ss/tc uses an electronic boost controller where as im not using any at all right now...

 

So if you delay the time it takes to open the wastegate, it's still going to do the same thing it's doing now. Are you sure you understand how a wastegate works?

 

is it a tuning issue? cause when i first got dyno tuned and we got all done i could barely drive on the street because i was at WOT at like 50% throttle. I would just give the car a little gas and it would bring me to 23psi of boost and it was rediculous. I would be jerking all around trying to take off normal at a stop light. WOund up being they had my desired air loads set high at real low RPM's or something or other and they forgot to fix them after they took it off the dyno. They said its easier to dyno it like that and there supposed to fix it b4 it comes off. maybe thats your problem?

 

i will ask vince about it, its just crazy how it spools so damn fast... i barely get on it and im at 7 psi almost instantly.

 

you got the opposite issue of me. with my MBC fully clockwise i only hit like 14 psi. i gotta check for boost leaks. and at WOT it takes me a long ass time to get up to "full boost", like 4.5k rpm

 

1st gear is great, almost no boost unless wot. 2nd-5th i barely hit the throttle and im boosted...

 

your right, however i was searching the net today and found a solution... adjust the wga rod to where it doesnt 100% close. by doing this some of the exhaust gases will bypass the turbo thus delaying the spool time, giving me a broader powerband, and allowing me to drive without hearing fffsssseeeewwww every 10 secs

 

did it work?

 

havent tried it yet, gonna do it tomorrow when i hook up the mbc. right now its fun to tease the ***** here in town with a mudstain gt.

 

haha, aight

 

don't do that, it will make the turbo work much harder to reach a desired boost level, possibly causing it to overspin. better solution is removing your atmospheric BOV and using a BPV thats routed back into your intake.

 

Wrong. He should not be cruising in boost, regardless. He should be cruising at a vacuum, typically on a flat road, about 60mph he should see about -10mmhg of vacuum.

Adjusting the WG rod is probably what needs done. Also, if your WG has interchangeable springs, change it out to a lower PSI spring, and run the MBC. Also, if your BOV has interchangeable springs, check and switch it out for a harder spring that might keep it shut better. Its not a tuning issue, because the car has no control over the boost, when you are running a boost controller (and your car didn't anyway).

 

granted he should not be cruising in boost because as soon as he lets off the throttle the vaccum should be opening up the BOV..........which sounds like whats happening to his annoyance. i'd dare say increasing the boost just to get rid of an annoying bov is risky at best.

 

Aren't you on a GT3076R?

No, but the car does have control over the Throttle Body.

 

This is true, yes. Throwing more boost at it won't help it.

BUT, adjusting the WG rod with less pretension will help it.