Couple turbo upgrade questions!

[BAdAzZV8]

How much hp increase would be expected to gain with just switching to the 13G's?

I'm assuming the 13G's are bigger than the T25's right?

Would I need bigger injectors if I got the bigger turbos?

How much boost can a stock motor hold?

[RBChallenger]

Are you taling about the stock block? If so, noone knows how much boost the stock block can take. Put it this way, with the correct gas and tuning you wont have any probelms. I believe Matt has cranked out 30psi with spark blowout, but no damage to the block. I know that a number of people have ran in excess of 22 psi with no damage. Hope that helps.

[BAdAzZV8]

Well I am just wondering if I put bigger turbos, bigger injectors, and fuel pump, if the motor itself could handle 2 bar and not blow up. And other obvious stuff like exhaust and intercooler.

I am thinking of going bigger than the 13G, but if the motor couldn't support it without me digging into the engine, then I didn't want to.

[DPREUSSNER]

I don't think you will have any problems unless you run your motor to lean. If you are going over 15 psi, I would highly recomend at least some 550 cc injectors, a larger fuel pump and a fuel managment system to monitor your A/F . I just go my new set of 13gs and can't wait to see what they can do! I will let you know if it gernades!!!!

[RBChallenger]

Nah, yo should be fine. However, so far as I know 13 g's arent going to coe anywhere close to pushing 2 bar. But yeah, the block will stand up to 2 bar if you tune it right and run enough fuel to it, in my opinion anyways. You may take this with a grain of salt but, I would go with the DR500s if I was looking at "small" turbos like that. I say that because 1.) They have been proven to dig deep into the 11's on pump gas 2.) Great customer support in Dynamic Racing 3.) Supporting 3/S tuners is always a good thing. Either way though, sounds like you are aiming to put down some serious power. Goodluck!!!

[BAdAzZV8]

Well I plan on doing this, probably in this order:

intake filter
3"DP/TP/Exhaust/Flow through muffler, no precats, no cats
wideband
some sort of tuning software(not sure what's available yet-may just go with safc)
650 inectors
bigger turbos(still doing some research on this)
FMIC


Later down the road:

exhaust manifold(maybe a header if one's available)
clutch
6 speed



what kind of plugs do you guys use, and what gap? I was thinking NGK TR6 gapped at .30, this is what i was going to do after I supercharged my vette, but never got enough time to install the s/c before I decided to get a new car.