As of right now my upgrades are: Full RB exhaust (pushing about 11lbs), emissions removed, intake, Fuel Cut Defensor, 680cc secondary injectors, Greddy FMIC with custom piping and HKS SSQ BOV. So my plans are to do a full-scale rebuild with a large street-port in 4 to 6 months but i would like to see if there is another way i can gain power without upgrading the turbo without breaking the bank too much being that i will be rebuilding anyway. Suggestions?

 

well theres only a few ways to make power. either more shove some more air into the combustion chamber (nitrous, forced induction, etc.), mak the engine run more efficiently which doesnt add much, but its still there. power to weight is always key.lighten up the car to where your comfortable with. thats about all i can think of for now.

 

you should buy a standalone.

 

Well as for a standalone.. i will be installing a microtec when i do the rebuild to shoot for 300whp on the stock turbo.. As for nitrous, i also have an intercooler spray kit that will get put on eventually. If i port the wastegate on the turbo and put in a boost controller won't i hit full boost faster and hold in more effieciently?

 

Porting your wastegate will add more horse power yes maybe not a tremendous ammount but it will be there. The only thing i can think of is if you upgrade your seondaries to a bigger cc then get a fuel controller might be cheaper than a microtech!?

 

go with a fuel controller then when the new motor blows, you'll be kicking yourself in the **** for not going for a standalone.

I'd go with bigger secondaries, upgraded fuel pump (if you dont already have one), wideband o2 sensor, and save money for tuning time OR learn to do it yourself.

 

Porting the wastegate will keep it from boost creeping, not really for making horsepower, but like you said, if you get a boost controller, it will help when you raise the boost and help maintain steady boost. stick with the microtec. Also, if you don't want a crazy turbo set up, have you thought about hybrid turbos? I plan on getting an Rtek 2.1, 720 secondaries and a BNR stage 1.

 

As for all the tuning suggestions, i understand where you are coming from but when i rebuild i will be getting the micrtoec at the same time like i said i am shooting for 300whp on the stock turbo. As for the hybrid turbo suggestion that is out of the question as i would have to tune the car.. But my ultimate goal is a BNR stage 4 and shoot for 400+ whp. i just need a temporary fix for my need for power lol.. So if porting the wastegate and adding a Boost controller will help then thats what i will do.. I should be able to push 12-13 psi no prob now that i have an FMIC right? Will i be ok on fuel?

 

300whp on a stock turbo is very unlikely. The highest I've seen yet was RETed's 240whp on a dynapack.

87 t-66 and Jaiyurai's suggestions are on point.

 

Stand alone and port the hell outta the WG so it does not creep.

 

Actually with a large street port, 14-15 lbs on a freshly rebuilt turbo, and intercooler sprayer it is plenty acheivable, at least from what i have heard.. we will see i guess right? Ok so i guess porting the wastegate and a Boost controller is my only options left before the rebuild.. i haven't gotten out to the track yet but i should be able to break into the 13's with the current setup right?

 

We'll see. You can make a dyno read whatever you like, but the highest I've ever witnessed was an S4 with S5 engine at our BDC tuning week up here. Stock turbo at 12psi made 248whp on a mustang dyno calibrated for each vehicle's specific drivetrain loss.

Cranking it up further only netted higher AIT's, with horspower staying right around the 250 mark.

13's are totally achievable on the stock turbo. I've done it years ago.

 

You should really upgrade your fuel system (pump, regulator, injectors) if you plan on pushing the motor and turbo up past 10psi.

Otherwise, spend the money on a EGT or wideband o2, so you can see your motor pop as you are going down the drag strip.

 

Chris Ludwig I think also did 253whp on stock S5 6 port block with stock turbo and FMIC @ 8psi, but that was with a standalone.

 

bnr stage 1 or two is what i suggest

 

Those HP numbers were with a ported motor? Did you make 13's on the stock motor? And what kind of boost controller is recommended? I want to eventually get a greddy profec with High/low boost option but a manual one would suffice no?

 

I don't recommend a manual boost controller. They're too finnicky and too unreliable when it comes to weather changes. Plus, they won't yield the full benefits of an electronic boost controller. Call me old-fashioned, but I'm still a die hard fan of the old school GReddy PROfec B.

B

 

Water/Alcohol injection.

 

why are you rebuilding your motor now? does it have low compression?

 

I thought that H2O/Alchy injection was for running high boost?? And i am rebuilding because it has about 120k on it and i would love the benefits of starting fresh and getting more power on the stock turbo before i go for a a bigger one.. Oh and yeah the Profec B is what i am looking for. Maybe i should just go ahead and get one

 

yeah might as well rebuild it now then and be able to spec out your rotor housings etc

 

^^yeah well either way i gotta get the car into paint first. Anyway I found out today that i might need a rebuild sooner than later apparently my coolant seals are bad and that is why my car is eating coolant. It just started not too long ago though.. Assuming i don't rag on it too much how long can i wait to rebuild??