Getting the most out of the stock turbo

[87V6]

I was wondering what it would take to get the most out of the stock turbo. My plan was to get an alchy injection kit and a boost controller, in addition to a scanmaster for tuning. In my research in this site and other sources thus far, I cannot tell whether or not the stock fuel system (injectors mostly) will handle additional boost. I plan on:

Doing the "spring cleaning" which will include a new fuel pump and hotwire
Purchasing and installing a scanmaster, boost controller, and SMC alchy injection kit, as well as, most likely, a cold air intake

Do you recommend chip and injector upgrades? If so, what size? Also, how much boost is it likely I will be able to run on the alchy injection before knock becomes an issue (I can tune boost up slowly to find this out, but I want an idea of benefit to cost ratio before I take this upgrade path). I have boost and knock, oil pressure and water temp gauges. Do you recommend the addition of an adjustible FPR and fuel pressure gauge as well? What about an EGT gauge? Will the stock intercooler handle much higher than the stock boost level?

I know it's a lot of questions, but I've spent a couple of days reading different stuff and don't yet know what is going to be required to maximize the use of the stock turbo, or if it is even worth going that route rather than modifying with a certain upgraded turbo in mind. Thanks a lot for the help guys.

 

[PEACHS]

Tuned rite

Hey 87V6,
Starting out with good gauges,boost,egt, scan tool,oil is a good start. Your stock injectors and turbo should work good for 20# of boost. With the ALkY your turbo should provide a good cool boost. I would get a good fuel pump and fuel pressure reg, along with the hotwire kit and guage. Many stock GNs have gone low 12s and even high 11s with stock turbos and injectors. Hope this helps.

 

[Nocooler]

Provided the stock injectors are clean - they will take you to 110mph safely.


I ran 110mph consistantly with stock turbo, alky, and a few other boltons.

Jeremy

 

[turbo6x2]

Hey no cooler when you run the 11.92 great time!

 

[murphster]

You definitely need the adjustable FPR and fuel pressure gauge. Another thing to consider is a dutt neck for the intercooler. It will help performance and is relatively cheap. Also get rid of the cat and get some kind of test pipe to put in place.

Its a must to get an upgrade chip. Either a 100 Octane chip such as a thrasher100 or a custom alchy chip from a vendor for your combo.

Exhaust and downpipe should be on the list down the road, depending on whats already in there, although its not that cheap.

If you are looking at track performance, sticky tires of some sort will be needed. Also a passenger side airbag and a drive shaft loop.

You can also get a better torque convertor to really push the stock turbo to the limit, but its not really needed unless the convertor you have is not in good condition.

If you get all this stuff done, then you will start pushing the injectors, but not until the end of third gear at high mph at the track. Upgraded injectors, to 36 blue tops, would be a lot safer and easier.

You should be able to run up to 22# of boost or so with the alchy and a good chip on the stock turbo, but you may run out of injector if you start reaching speeds around 110mph and mid 12's.

There are not too many people running lower 12's and faster with stock injectors. A while back, yes, due to limited availibility of injectors. Now, most people upgrade them because it is much safer (not impossible) to reach those times with bigger injectors.

I'd do everything you already stated, get it in tune and running great, and look at injectors, exhaust/downpipe, convertor as the next step, followed by upgrading the turbo if you want to keep upgrading.

 

[Nocooler]

Originally posted by turbo6x2
Hey no cooler when you run the 11.92 great time!

about 2 weeks ago - it's got plenty more in it