2g gsx stock turbo difference

[sbeck]

From what I have read a stock 2g gsx dynos at around 150-160 whp. Has anyone done back to back dynos and just replaced the turbo with a 16g or big t28 and supporting fuel mods, bov, and upped the boost to 18-21psi.

 

[ajpm26]

Look at dyno talk, there's plenty of dyno charts with people on 16g's and t28s, on top of supporting fuel mods you need some sort of way to tune the car, just incase you didnt already know.

 

[my dreamt dsm]

I'm say what I say at work.... "Wwhhhhaaaaa"

If your adding supporting mods and a bigger turbo, of course this will increase hp.
You might of meant just adding a 16g- switching turbo and no add on. It will increase hp but to a certain point where it'll choke before it need supporting mods. Different animal! Every car vary even if the car are modified same part for part.
I have a feeling this is ending in the frequently asked questions

 

[JusMX141]

I'm going to leave it open for now, but there are far too many variables for a thread like this to work out. Plenty of guys have upgraded turbos and gone slower or made less power because of a lousy tune or poor supporting mod combination.

You can't look at turbos as horsepower....you must look at them as airflow. It's up to you to put together the correct parts package to turn that airflow INTO horsepower. Then you have the variables of different air temps, different intercooler efficiency....you'd literally have to find someone who pulled their car on a dyno with a T25, got a number, then immediately swapped to a T28 or something else and pulled the car back on the dyno. Probably not going to happen.

 

[sbeck]

I did a test using dsmlink to estimate hp and torque with a before and after of t25 at stock boost, evo injectors, walbro 255, 1g bov, stock intake, stock exhaust, stock intercooler + piping, dsmlink v3 lite and logged a best of 160 hp and 170 torque. I then switched to a fp big 28 + MBC set to 21 psi and had to tighten the gap on the plugs to not misfire at boost and did a log with identical timing and even though I was getting a good amount of knock I saw my peak torque increase to 269 ft lbs! The best horsepower number was not amazing but still an improvement at 220 hp. I wish I would have saved the logs instead of just looking at them out of curiosity before I started playing with the timing.