Ok this been pondering in my head for a while and no one has asked the question yet, so what happens for example my car is a 99 grand am and i swaped the ecu to a 00 then i had the car flashed with the gm reflash for the supercharger, my base pressure for the 99 was 43psi and 00 and up was for what everybody says around 50- 55psi at idle, so my question is when you flash the ecu with the gm reflash does it also change the stock pressure to 50 from 43?




http://a709.ac-images.myspacecdn.com/images01/85/l_c45bfa9c54e0aebaf0fbf6bf67c30a74.jpg

The reflash will not change you fuel pressure.


- 93 mph in the 1/8 mile
Member of J-Body Of Michigan.

Thank you, i was wondering about that for a while, so its just a diferent fuel regulator for the 00 then.


http://a709.ac-images.myspacecdn.com/images01/85/l_c45bfa9c54e0aebaf0fbf6bf67c30a74.jpg

there is no electronic fuel pressure, its all mechanical. in this case, the mechanical component would be the regulator. so unless you change that out, it shouldnt change.



-----------------------------------------------------------------------

-----------------------------------------------------------------------
- Sold my beloved J in April 2010 -

the fuel pressure regs have different ratings , my 97 had a base of 42-43 , and my 00 was 50

ive got a caspers adjustable fpr , on a fuel rail that has been drilled and tapped for a pressure fitting so you can read the actual fuel pressure , 2.4's do not have the port stock , that ill sell for 110.00 shipped

no i dont need all of that i already have a adjustable regulator and gauge also, i was wondering about the fuel pressure on the 99 2.4 and the 00 2.4L if the flash afected the pressure at all, but i guess i wasnt thinking straight for a bit cause i knew the answer but i realized that the 99 low inpedence fuel set up is 43 and 00 high impedence are 50.


http://a709.ac-images.myspacecdn.com/images01/85/l_c45bfa9c54e0aebaf0fbf6bf67c30a74.jpg