ez76

iTrader: (5)

at stock turbo boost levels, what's an aem doing that can't be emulated with a reflash or piggyback? [i am ignorant]

TurbotrixRacing

iTrader: (21)

Converting the car to speed density ..and losing the mass air sensor is huge gains ..


Mark
Turbotrix

4ringturncoat

iTrader: (21)

http://www.buschurracing.com/EVO_Stage4.html This will help with how much power you can get from the stock turbo.

SSKILLA

hey turbo how would u recomend doing this.....i know you can go the aem ems route but i also heard ultimate came out with a blow through sensor but im not too sure about that....wha do u think

chuntington101

Very nice figures. what mods did you have? what boost where you running for the 400lbs ft run? stock turbo or modded (ie bb conversion)? how did the turbo hold up (i hear of bent shafts when really high boodt is ran)?

thanks Chris.

David Buschur

iTrader: (53)

We didn't wing the hell out of the stock turbo and try to get it to produce 28 psi of boost on a spike or anything. We did manage 390 whp and 390 ft lbs of torque with the AEM EMS in the car and the stock turbo, head, shortblock.

We have gone 11.65 at 117.88 mph on the stock turbo though, so 11's on the stock turbo is DEFINETELY do-able.

David Buschur
www.buschurracing.com

MPZ06

Makes me second guess the route I went with the Utec. Very friendly to tune but cant convert to speed density have to deal with the restrictive MAS. Hoping to switch out to the UR , wait to see other peoples results.

But I still love the Utec.

Anyway awesome numbers on the stock turbo
One hell of a tune, congrats.

fimotorsports

iTrader: (92)

11's on stock turbo is easy. Just get Cams, turbo back exhaust, fuel pump, injectors, preferrably a fmic and either flash or ems. I did it on a basic mail in dynoflash and stock clutch.

Dan

TurbotrixRacing

iTrader: (21)

Ron achieved ... 11.7 on with the ems on the stock turbo and pump gas. Stock intercooler. He had cams, turbo back exhaust, pipe kit and boost controler with air filter .. Ohh and injectors..660cc ..which btw were maxed out at 400 hp ..

Mark
Turbotrix

MalibuJack

iTrader: (5)

I have to agree.. its definitely possible.. But like everyone has said in the past few messages the key to making those numbers is reducing as many of the restrictions in the intake and exhaust path as possible.. At what point does it become impractical due to the costs of upgrading components over just bolting up a new turbo kit will be your own judgement though. I realize that people love the speed density conversion, but the blowthrough MAF upgrade is also an option, though not cheap. As far as I can tell so far, if you want to get 400+ whp, you need to address inherant restrictions in the system.. upgraded cams, upgraded exhaust, upgraded intercooler and piping, reducing restrictions introduced by the MAF sensor, throttle body, intake manifold and head.. The real problem is that the cost of an upgraded head, throttle body, and MAF upgrade, end up costing nearly as much as a turbo kit and AEM setup.

HOWEVER, the one advantage of stock (or stock design) turbos, and retaining it is drivability, and fun factor on the street..

whitet777

iTrader: (6)

So what's the secret to getting the stock turbo to spool by 2800RPM?

ShapeGSX

I don't see why an 11 second run on a 9.8cm^2 twin-scroll 16G is such a big deal. People have been doing it for years with 7cm^2 single-scroll 16Gs on DSMs.

I ran an 11.98 and an 11.95@116mph a few weeks back with an Evo III 16G on my 1997 Eclipse GSX (3150lbs without me in it) at 24psi. I ran 118mph last year with the same turbo at 25 to 26psi, but the spike I was getting was over 30psi, so I haven't tried it again. I think I have sorted out the spike, now, though.

ShapeGSX

All of those components will also benefit the larger turbo. Even moreso, actually.

Personally, I don't think that a GM hotwire MAF gives much (if any) restriction at all. So it is a toss-up between it and speed density.

But then again, I'm still running a bone stock 2G DSM MAF.

Eric Lyublinsky

iTrader: (5)

Evo is like 3350lb with driver so you have a 200lb advantage. Some people are runing 11.8@116 or better with the stock turbo. .

ShapeGSX

Go back and read what I said. 3150lbs WITHOUT me in it. With me in the car, the total package weighs 3315lbs. At least it says that on New England Dragway's scales. Personally, I think they read a little light.