[ZLRob]

Originally Posted by SOCAL.M6.ZLE

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

Airmass changes with current DA. I'll see 1.4- 1.5 grams on WOT pulls, but I'll also see if less than sometimes. DA always changes despite being at the same elevation.

I had my eye on those valve covers but it sounds like they are slightly headache inducing due to their raised height qualities that they advertise them for, which is a bit of a bummer. Plus the more I think about it the more they would draw the eye of a smog tech inspecting the vehicle come inspection time.

I agree, I think the JMS has a ceiling of somewhere around mid 700's. I'm seeing mine start to ever so slightly drop pressure up very top but it's not anything that worries me.

I'm gonna message you so we can exchange information!