Gtp injectors on 01. do i need 97-rails?

[01PewterDropTop]

I tried to search it but got a bunch or random threads. i have read befor on here that inorder to run gtp injectors on a 98+ u need to switch to 95-97 fuel rails?

[97rs4life]

Re: Gtp injectors on 01. do i need 97-rails?

yea or modify your rail. Also will need different pigtails for the wiring harness

[vr4gasm]

Re: Gtp injectors on 01. do i need 97-rails?

just use injectors out of a 4.2l straight 6 trailblazer or envoy they are direct plug and go

[97rs4life]

Re: Gtp injectors on 01. do i need 97-rails?

just use injectors out of a 4.2l straight 6 trailblazer or envoy they are direct plug and go

what flow rating are those?

[pace2006]

Re: Gtp injectors on 01. do i need 97-rails?

To use the 97-03 (I believe it's to '03) GTP injectors, you'll either need stock 99- fuel rails or to modify your own.

[01PewterDropTop]

Re: Gtp injectors on 01. do i need 97-rails?

just use injectors out of a 4.2l straight 6 trailblazer or envoy they are direct plug and go

What year? and do they require any tuning?

[caspernicus]

Re: Gtp injectors on 01. do i need 97-rails?

The trailblazer injectors are 24lber's, and yes they require
tuning. I think they're from 03-04 models.

If you plan to stay n/a, they'll be a good upgrade. It all
depends on your goal for your car.

[ssms5411]

Re: Gtp injectors on 01. do i need 97-rails?

It also depends on what fuel pressure they run at to calculate what they flow at on ours. Like 36LB Bosch style GTP injectors flow at 33lBS on our F-bodies so I have them scaled from 33.00 to 34.00 on the flow chart.