Quote:
Originally Posted by ZLRob
Couple of things:
First thing, how do you like those Katech valve covers? Apparently they are cast aluminum and not billets right?
Second, how do you have a cam with a fuel lobe and fuel injectors and still don't have enough to run full pump E85, or is there something here that I missed?
For kicks, you should run a "Dyno" log on HPTuners alongside your normal logged stuff and see how much HP/TQ is indicated by the VCM scanner you are outputting and cross compare that to your Dyno run to see what the power differences are between the two.
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1. LOVE the valve covers. This was a purely cosmetic upgrade. I am told they have NO baffling so it can be tricky to get the CC line pressure correct. I needed to add a restriction fitting, like many others have done.
2. I CAN run straight E soon as I get a proper LOW SIDE. Currently have plenty of headway with the injectors, but the low side starts to drop at 6k, so we had to limit the E content to E60 on warm days and E50 on cold days... The JMS helps on the low side, but a proper low side will help me add another 100rwhp when and if i see the need later on.
3. Not sure what a "dyno" log is... I assume that is the same as a WOT data log? Yes, I have those, and I do data log every dyno session. The last session had belt slip, and i lost 1 pound of boost up top, so I assume I will pick up another 25 or so, next time I go out?
When I do look at the HP data logs, the delivered TQ value doesn't change.
For what its worth... at peak TQ (around 3,500 RPM) my air mass changed as follows.
LT4 Injectors + E33 + 8.8 lower = 12.2psi = 1.54 cylinder air mass
FIC 30's + E60 + 9.17" lower = 13.7psi = 1.63 cylinder air mass