16g stroker

[TalonTsi31]

so i have a problem. i have a 6 bolt stroker with a 16g on it.
the entire same shelf i had on my 2.0. well i added the stroker a magnus smim and a accufab 75mm throttle body. the car made 315 and 355 on 8 pounds. but anything above that it spikes and then imiediatly falls back down to 10 pounds.
i was watching dsm link and it was pulling out timing the day i was tuning due to 104 intake temps. so someone recomended i go with a blow through set up(3'' gm maf).
so you guys think this will help?
i was thinking that maybe the evo III 16g just cant flow enough air to fill the motor and intake manifold so the motor is sucking more than the turbo can push.
the 16g is only a temperary solution till i finish saving for a 35r.
but in the meantime i would like it to run corectly
thanks

 

[turboAWDfanatic]

Sorry to revive such an old post, but did you ever get the 16g to run properly w/ your setup? I am having the same issue. I hit 20psi at 3k rpm, but boost drops off to 15psi by 6k rpm. I have zero boost leaks. I have an internal wastegate, and I enlarged the air bleeder hole on the my ball & spring MBC but that had no effect. I have stock cams, and I'm sitting here wondering if my 2.3L can actually out flow the 16g GT that I have, or if I've got some sort of issue.

I'd like a bigger turbo when I can afford it, but I LOVE the spool time of this setup, and I'd like to be able to hold boost at least to 6k.

 

[turbo addict]

really? I have an e316g and can hold over 30psi if its not over 90* out. try unhooking the wastegate vacuum line all together. I have a 2.0 with fp2's forrester intake and fp exhaust. with really high flowing intake pipes and exhaust pipe. but it holds to 8800rpm.

ps. i took it out on a 40* day and made over 45psi.

 

[turboAWDfanatic]

Well, I'm asking for input from people running a 2.3L stroker. I'm afraid to disconnect the MBC b/c I'm not sure if my 660 injectors and basic tune can handle the initial 26+ psi hit. I can monitor AFR and knock though, so I could try it if I'm real careful.

 

[Stapl3]

really? I have an e316g and can hold over 30psi if its not over 90* out. try unhooking the wastegate vacuum line all together. I have a 2.0 with fp2's forrester intake and fp exhaust. with really high flowing intake pipes and exhaust pipe. but it holds to 8800rpm.

ps. i took it out on a 40* day and made over 45psi.

What's your fuel/tuning setup currently?

 

[turbo addict]

What's your fuel/tuning setup currently?

chip with 8800rpm limit, rc1000cc, 6an with big filter, hotwired 255hp, afc. evo mas. e85, afpr.
I am starting to run out of pump.
air furl ratios are still good though, and I am running alot of timing.
this is also on an internal gate that is shimmed and externally dumped.

 

[turbo addict]

Well, I'm asking for input from people running a 2.3L stroker. I'm afraid to disconnect the MBC b/c I'm not sure if my 660 injectors and basic tune can handle the initial 26+ psi hit. I can monitor AFR and knock though, so I could try it if I'm real careful.

me holding 37-38psi on a 70*day on just a 2.0liter up to 8800rpm is alot of air. there shouldn't be that much difference going to a 2.3liter.

work on freeing up the turbo. open it up as much as possible going to the compressor inlet and out the turbine outlet. I made huge differences in doing that. (like 15psi over where I was at!)

 

[dsm-onster]

Turbo Addict, what is your airflow number at 8500rpms and at 6500rpms?

 

[turbo addict]

Turbo Addict, what is your airflow number at 8500rpms and at 6500rpms?

through the afc?

 

[dsm-onster]

Don't you have a logger? You're pushing hella boost.

 

[turbo addict]

Don't you have a logger? You're pushing hella boost.

I have only used the logger when I was still on my stock 1.6liter. I have not done it on the 2.0 because I have my base timing turned back 4-5 degrees, and added 8psi of fuel pressure. My logger was at 22* at 7000 when my 1.6 broke a rod bolt. But my base was at 9-10* not 5*.

 

[dsm-onster]

Wow! That's not good.

I wanted to see the massflow log of what 37psi at 8K with a 16g and 272 cams looked like. . .

 

[red1993gsallmt]

same problem with an 18g