How to turn up the boost?

[jmvicp]

I just wanted to know how to turn up the boost on my 87' GN. And what is the stock psi that GNs use. Thanks

and by the way, when i punched it on the highway the other day, the psi went to 15psi on the stock meter. i also have a boost gauge that read 18psi when the pedal was floored, but the guy that had it before me put in a hyperchip.

 

[86gn]

you need to make a adjustable wastegate,you can buy one or look on gnttype.org and go to a hardware store for 5$ make your own.With pump gas and no alky your lucky to be getting 18 with no knock be carefull

 

[TURBOV6]

One way of increasing boost is the chip and other is the adjustable wastgate actuator. I never heard Hypechip? Most vendors that burn or sell street chips usually have at least 16-18lbs of boost. And for the stock boost guage its around 1-2lbs off, stock boost settings are around 14lbs max.

I would look into a Thrasher chip ($25).

 

[blackbuick87]

Unless you have a tool to measure knock you had better not mess with it at all. You are probably knocking now unless you have ported heads or a bigger IC

 

[Buick T]

He's probably talking about a HyperTech chip. Memphis company that makes chips for just about everything. The owner used some GNs for testing on the local quarter. He also has 3 GNXs, two that are low miler, less than 100, garage kings.

 

[BLACK6PACK]

Don't mess with the boost without a knock gauge or a scan tool. Its a quick way to blow up the motor.

 

[jmvicp]

Yes that was it, a Hypertech chip.

What do you guys think I should do. I want more performance but I dont want to take the chance of blowing my engine or harming anything else. What are the first mods that you guys have done that are the most important. Thanks

 

[TURBOV6]

What mods you got now? Check out www.gnttype.org lots of helpful info.

 

[UNGN]

Don't turn up the boost at all until you have a new fuel pump, adjustable FP regulator, a scan tool and/or knock gage a good flowing exhaust, a cone air filter and you are absolutely sure the car is good working condition.

Be advised that you can't turn up the boost much before race gas or additives such a xylene or toluene need to be added.

 

[jmvicp]

To tell you the truth, I'm not even sure what mods are done to the car. I am the 3rd owner of the car, the first owner was a place called Larson Motor Center Inc., so they could have been the ones that put on a few mods. I just bought it from some guy who was selling it for some millionaire. I want to call either of them and ask what mods have been done. I know that it has line-locks, a shift kit, that Hypertech chip, and it had Chassis Engineering "Traklift Bars" in the truck, which i took out and put in my garage. other than that i dont know. He has oil, boost, water, and fuel pres. gages, so it kind of looks like it might have been previously raced.

 

[wyk3d]

get rid of that hyperjunk chip too and go with one that doesnt suck: Thrasher,Jim Testa, Joe Lubrant. Who knows what kinda timing or settings that generic catchall chip has set up inside.

Dan

 

[jmvicp]

yeah, i was thinking about junking that chip and buying a good name brand one that is the most popular. i should be getting a good exhaust system, the chip, and maybe an cold air intake within a month or so.