AGP Turbo owners, factory help from the experts who know - Page 7 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

jeff657756 · 09-21-2017, 11:57 AM

Quote:

Originally Posted by DTR FTW

Can you adjust Gain on the GFB2 even if youre only on wastegate? I.e, im only on 6lbs, but i feel like im not seeing peak until what seems to be relatively late in the powerband(close to 4k).

54/57 .82's, stock ls3

4k is pretty good. Mine come on around that time (57/57s). If you need faster then you may be able to. Set peak boost. Leave duty cycle at 10 and that should put you close to the 6lbs. Once its set turn your gain up incrementally. Dont go too high or you will overshoot. I dont think you will see too much of a difference though honestly.

AGP Turbo · 09-21-2017, 03:30 PM

.63 turbine housings might have been a better choice for you. They will support 800whp and spool up noticeably quicker.

As for boost control a little stronger spring in the wastegates would help too. The softer springs tend to let a little exhaust leak out before opening pressure.

And as for EBC adjustment, feel free to run the gain up to a pretty high number. We often set them around 80-90% without any spike problem.

Generally duty cycle below 20% is doing nothing. You usually have to hit 25% before it even starts to make any difference but then gets very sensitive from there up. IE a change from 20 to 25% does almost nothing but a change from 30 to 35% might be 3psi.

DTR FTW · 09-21-2017, 10:58 PM

I wont see 800 on 93 with my fuel system lol. I cant even exceed the 6lbs on 93. Tuner was seeing knock after only 7*

DTR FTW · 09-21-2017, 11:00 PM

Hence why i wanted to try and make the most of the 6lbs I have lol

AGP Turbo · 09-21-2017, 11:25 PM

How low did you get the timing? I'd run 8-9psi and drop the timing back to 7^ during peak torque then bring a few degrees back in toward redline.

DTR FTW · 09-22-2017, 07:07 AM

Im not sure how low. I was just told it wouldnt take more than 6lbs and 7 degrees. Ill look into it

DTR FTW · 09-22-2017, 07:08 AM

Also tuner couldnt get into the MSD bap for some reason. Been waiting for 2 weeks for a response from MSD as to why

Redlineviper · 09-22-2017, 08:12 AM

Very strange you are getting knock with 6lbs and 7 degrees of timing. I am running double that timing on 3 times that boost. Granted I have a 9.1 compression engine on e85 and meth but still.

Moreair1 · 09-22-2017, 09:13 AM

I'm running 9 lbs on 91 and don t get any kr, have you tried looking to see if the msd bap needs a update? Or maybe they need to download a updated program on there computer

stevieturbo · 09-22-2017, 03:04 PM

Quote:

Originally Posted by Redlineviper

Very strange you are getting knock with 6lbs and 7 degrees of timing. I am running double that timing on 3 times that boost. Granted I have a 9.1 compression engine on e85 and meth but still.

I'd always question a tuner who says they "see" knock...

Knock being a noise....not a visual.

Proper knock detection is important when tuning...not guesswork.

AGP Turbo · 09-22-2017, 03:07 PM

Without the MSD working then it's probably leaning out anything over 6psi. All these problems will go away when you get the MSD working and can tune more. You should end up around 8-9psi on 93oct.

Unavowed · 09-22-2017, 04:03 PM

Quote:

Originally Posted by DTR FTW

I wont see 800 on 93 with my fuel system lol. I cant even exceed the 6lbs on 93. Tuner was seeing knock after only 7*

Sounds like you need a pump, injectors and flex fuel.

Quote:

Originally Posted by Redlineviper

Granted I have a 9.1 compression engine on e85 and meth but still.

I'd say that's a night and day difference.

Quote:

Originally Posted by stevieturbo

I'd always question a tuner who says they "see" knock...
Knock being a noise....not a visual.
Proper knock detection is important when tuning...not guesswork.

"See" as in see on the logs, I assume.

DTR FTW · 09-22-2017, 06:41 PM

Quote:

Originally Posted by Unavowed

Sounds like you need a pump, injectors and flex fuel.

I'd say that's a night and day difference.

"See" as in see on the logs, I assume.

Have injectors, too broke for pump since i floated my valves a week after build lol, and goal didnt include or require e85.

But yeah, reading knock, not audible as far as im aware. Ive been curious about the posibility of false knock, but thats not something tuners like to hear suggested from nobodies lol

stevieturbo · 09-23-2017, 06:18 AM

Knock is always audible, certainly when pump fuel is involved....that's why proper knock detection is important. Never blindly rely ( or believe ) on sensors unless you have verified they are actually proven to be working and calibrated correctly for your setup.

09-22-2017, 08:12 AM	#92
Redlineviper Drives: 2013 ZL1 Join Date: Jan 2015 Location: Orlando Posts: 936	Very strange you are getting knock with 6lbs and 7 degrees of timing. I am running double that timing on 3 times that boost. Granted I have a 9.1 compression engine on e85 and meth but still. __________________ 2013 A6 ZL1

09-22-2017, 09:13 AM	#93
Moreair1 Drives: 2011 ss convertible Join Date: Jul 2015 Location: Colorado Posts: 1,329 View My Garage	I'm running 9 lbs on 91 and don t get any kr, have you tried looking to see if the msd bap needs a update? Or maybe they need to download a updated program on there computer __________________ Cai intake and a few other mods😎

09-21-2017, 03:30 PM	#86
AGP Turbo Drives: All things Turbocharged Join Date: Dec 2010 Location: AZ Posts: 1,199	.63 turbine housings might have been a better choice for you. They will support 800whp and spool up noticeably quicker. As for boost control a little stronger spring in the wastegates would help too. The softer springs tend to let a little exhaust leak out before opening pressure. And as for EBC adjustment, feel free to run the gain up to a pretty high number. We often set them around 80-90% without any spike problem. Generally duty cycle below 20% is doing nothing. You usually have to hit 25% before it even starts to make any difference but then gets very sensitive from there up. IE a change from 20 to 25% does almost nothing but a change from 30 to 35% might be 3psi.

09-21-2017, 10:58 PM	#87
DTR FTW Drives: 2014 1LE Join Date: Apr 2017 Location: East Coast Posts: 13	I wont see 800 on 93 with my fuel system lol. I cant even exceed the 6lbs on 93. Tuner was seeing knock after only 7*

09-21-2017, 11:00 PM	#88
DTR FTW Drives: 2014 1LE Join Date: Apr 2017 Location: East Coast Posts: 13	Hence why i wanted to try and make the most of the 6lbs I have lol

09-21-2017, 11:25 PM	#89
AGP Turbo Drives: All things Turbocharged Join Date: Dec 2010 Location: AZ Posts: 1,199	How low did you get the timing? I'd run 8-9psi and drop the timing back to 7^ during peak torque then bring a few degrees back in toward redline.

09-22-2017, 07:07 AM	#90
DTR FTW Drives: 2014 1LE Join Date: Apr 2017 Location: East Coast Posts: 13	Im not sure how low. I was just told it wouldnt take more than 6lbs and 7 degrees. Ill look into it

09-22-2017, 07:08 AM	#91
DTR FTW Drives: 2014 1LE Join Date: Apr 2017 Location: East Coast Posts: 13	Also tuner couldnt get into the MSD bap for some reason. Been waiting for 2 weeks for a response from MSD as to why

09-22-2017, 03:07 PM	#95
AGP Turbo Drives: All things Turbocharged Join Date: Dec 2010 Location: AZ Posts: 1,199	Without the MSD working then it's probably leaning out anything over 6psi. All these problems will go away when you get the MSD working and can tune more. You should end up around 8-9psi on 93oct.

09-23-2017, 06:18 AM	#98
stevieturbo Drives: it changes Join Date: Nov 2010 Location: Norn Iron Posts: 1,128	Knock is always audible, certainly when pump fuel is involved....that's why proper knock detection is important. Never blindly rely ( or believe ) on sensors unless you have verified they are actually proven to be working and calibrated correctly for your setup.