'89 GT - Did an EBC install - 15psi. No issues?

focusownerskid · 4-10-08, 13:15

Have done a few pulls since my install, dialed it up slowly, figuring i would nail the boost cut.

It was chilly last night, plenty of volumetric airflow through the vaf to hit the cut, but never did.

15.1psi according the my peak hold function. Multiple times.

Is my car a freak? It's stone stock and i threw on a EBC i was planning on using a higher end vehicle for the hell of it and am very impressed.

Thoughts?

- Drew

**SXE MX6** · 4-10-08, 13:37

the boost gauge is wrong??? A quick spike to 15psi maybe, but not 15psi without a chip.

**Zach** · 4-10-08, 14:32

take off your air filter, start your car, then push the VAF door all the way open. you should hear a beep then hit fuel cut. If not, then possibly your MX6 has been chipped, or has the VAF hack.

sha-d · 4-10-08, 21:55

Quote:

Originally Posted by Zach

take off your air filter, start your car, then push the VAF door all the way open. you should hear a beep then hit fuel cut. If not, then possibly your MX6 has been chipped, or has the VAF hack.

tell me more!!!!

**Zach** · 4-10-08, 22:07

Quote:

Originally Posted by sha-d

tell me more!!!!

Ok...SEARCH for it

I can never find it myself whenever I search for it...I personally would rather chip it than hack it.

compnut21 · 4-10-08, 22:32

i think it is called a hack because it mostly involves shimming the door so it cant be pinned fully back. its basically horrible for your fuel/timing/ecu in general. especially if you raise boost, you can say byebye to your f2t.

raising boost? chip or megasquirt ftw.

focusownerskid · 4-11-08, 1:03

I tapped 15.8psi today and finally found the cut.

From there, I had to continuously dial her back, as the cut got lower and lower.

Only way i can describe it;

It seemed like the car had to 'remember' it had a fuel cut, and once it did she figured out the right number

Now, I can dial in 13.4psi w/o a cut, anything above 13.6psi will cause a cut.

So, i am leaving her down around 12psi until i chip her.

Quote:

Originally Posted by SXE MX6

the boost gauge is wrong??? A quick spike to 15psi maybe, but not 15psi without a chip.

Dead steady 15.1psi, my controller doesn't spike.

- Drew

compnut21 · 4-11-08, 1:57

you live in a high elevation? maybe you vaf is a bit corroded and wouldn't pin back, and now has freed itself. isn't having a mechanical device measure your airflow fun?

focusownerskid · 4-11-08, 2:46

Quote:

Originally Posted by compnut21

you live in a high elevation? maybe you vaf is a bit corroded and wouldn't pin back, and now has freed itself. isn't having a mechanical device measure your airflow fun?

Considering this car has been a virgin since brand new, i wouldn't be surprised at all.

And yes, archaic.

- Drew

4-10-08, 13:15	#1 (permalink)
focusownerskid Join Date: Aug 2007 Location: Monroe, MI, USA Age: 21 iTrader: (1)	'89 GT - Did an EBC install - 15psi. No issues? Have done a few pulls since my install, dialed it up slowly, figuring i would nail the boost cut. It was chilly last night, plenty of volumetric airflow through the vaf to hit the cut, but never did. 15.1psi according the my peak hold function. Multiple times. Is my car a freak? It's stone stock and i threw on a EBC i was planning on using a higher end vehicle for the hell of it and am very impressed. Thoughts? - Drew

4-10-08, 13:37	#2 (permalink)
SXE MX6 Join Date: May 2004 Location: , Close to Niagara Falls CA Age: 29 iTrader: (2)	the boost gauge is wrong??? A quick spike to 15psi maybe, but not 15psi without a chip.
	*Gettin blown by one 19yr old...NICE!! Gettin blown by two...PRICELESS!!* 89 MX6 Turbo......waiting for the road again....someday....maybe!!! 89 626 Turbo Hatch....everyday driver! 89 ZX7 wishing it was turbo...... *Wife's cars-* 2001 Echo(driver) / 1991 GT Mustang(summer)

4-10-08, 22:32	#6 (permalink)
compnut21 Bear on the internet. Join Date: Oct 2007 Location: Olympia, WA iTrader: (5)	i think it is called a hack because it mostly involves shimming the door so it cant be pinned fully back. its basically horrible for your fuel/timing/ecu in general. especially if you raise boost, you can say byebye to your f2t. raising boost? chip or megasquirt ftw.
	89 GT 4WS/Megasquirt/No Engine/∞ mpg My FE3T Project

4-11-08, 1:57	#8 (permalink)
compnut21 Bear on the internet. Join Date: Oct 2007 Location: Olympia, WA iTrader: (5)	you live in a high elevation? maybe you vaf is a bit corroded and wouldn't pin back, and now has freed itself. isn't having a mechanical device measure your airflow fun?
	89 GT 4WS/Megasquirt/No Engine/∞ mpg My FE3T Project