Let the fun begin.
#12
Re: Let the fun begin.
for now im not planning on running more than 12psi. which i know the car can take since ive run it on 15psi. i just want to get the megasquirt to run properly and have a nice afr.
then the new engine is going in with the gm-8 and 25psi. 400hp and 375 ft/lbs, here i come.
then the new engine is going in with the gm-8 and 25psi. 400hp and 375 ft/lbs, here i come.
#13
Re: Let the fun begin.
Just remember that your fuel pressure @ the rail is going to be pump pressure minus intake manifold pressure.
Most returnless setups seem to run ~55 psi. So, you get more "differential" pressure between the 55 psi in the rail and the -6 psi in your intake during a part throttle cruise... effectively 61 psi of fuel pressure. When you boost it works the opposite... 55 psi rail pressure minus 12 psi of boost = 43 psi of differential pressure. As soon as you add in the return line, expect the tune to go lean at part throttle and rich under boost.
No big deal, just don't press the returnless setup too far.
Most returnless setups seem to run ~55 psi. So, you get more "differential" pressure between the 55 psi in the rail and the -6 psi in your intake during a part throttle cruise... effectively 61 psi of fuel pressure. When you boost it works the opposite... 55 psi rail pressure minus 12 psi of boost = 43 psi of differential pressure. As soon as you add in the return line, expect the tune to go lean at part throttle and rich under boost.
No big deal, just don't press the returnless setup too far.
#16
Re: Let the fun begin.
Originally Posted by EGgyLShatch
congrats on the upgrade. what were you running for tuning before? from what i've seen, the management options for foci are overpriced, dealer/professional oriented, and shitty.
Sct basically controls the focus market. but if i can get a harness made, and simplify the megasquirt process for the focus owners out their. its a fucken huge market.
#17
Re: Let the fun begin.
Is your car still ugly like in the picture? And by ugly I don't mean the bondo...
I just wish MS had real sequential injection. I just don't like having fuel boiling on the valve for 2x longer than it has to be.
I just wish MS had real sequential injection. I just don't like having fuel boiling on the valve for 2x longer than it has to be.
#18
Re: Let the fun begin.
Sequential only matters for idle emissions. Everyone on this site is an emissions violator, so that can't be what you are getting at.
Porsche injects fuel between intake events to boil on the back of the valve face for cooling. As such, during engine operation, it is desireable. So, that can't be what you are getting at.
What are you getting at?
Porsche injects fuel between intake events to boil on the back of the valve face for cooling. As such, during engine operation, it is desireable. So, that can't be what you are getting at.
What are you getting at?
#20
Re: Let the fun begin.
Then don't sit in parking lots idling for long periods, because I assure you gain vs sequential injection isn't a significant differece once you are rolling. Mustang 5.0 got 30-32 mpg on the highway, thanks to the fact there's nothing wrong with non-sequential injection.
I havesome harsh criticisms of MS, but that isn't a blip on my radar.
I havesome harsh criticisms of MS, but that isn't a blip on my radar.