Help with tuning

[darky82]

Yeah pretty much spot on, might be .1-.2 out

[VL400]

Ok. You will need to be fairly specific on mods if you want people to help - if its all standard then your going to have to start looking for things like low fuel pressure, clogged injectors etc

You will likely need test the IAC too. Try getting it idling and in RT change the commanded idle speed. See if the engine reacts and starts idling at the speed you set.

[darky82]

Ok, I rebuild the engine with, 40th flat tops, 10:1 comp, cam specs hyd (below), vn alloy heads just rebuilt. 64cc Combustion Chamber
190cc Intake Runner, 2.02 Intake Valve, 1.600 Exhaust Valve. HSV extractors, stock exhaust, rear muffler gone, mufflers under the car a pretty much gutted lol will do for now . roller rockers. cold air intake. injectors, cant remember spec but when i bought them i was after hsv/blue i think they are, and they sold me one that was a slightly better injector (red plastic type) for memory they might be 36-38LB and 440cc not sure? Fuel pressure is run a constant 3bar AFPR. New ignition module, new IAC, new TPS
I dont have any pollution PCV working as yet, i having it running into the air box as a temporary thing.
Gearbox has a B&M shift improvement kit and corvette 2nd gear servo, 3500rpm stall.
IAC is new so should be working.
Where do i change commanded idle speed?
Sorry dont know what happened with the attachment.
Oh i always run 98 too!

[VL400]

Where do i change commanded idle speed?

Desired idle RPM vs Battery voltage tables - three tables for different conditions, neutral, drive and manual trans (not used for you). You have a fair bit of tuning to do, so look through the XDF and get to know the items. Most are named pretty well and explain what they do.

You will need to find out exactly what injectors are in it, there is a parameter to tell the ECU how much they flow.

[Holden202T]

i got a set for a mates motor a while back and they were red and 30lbs maybe similar but as VL400 said, need to find correct LB so can calc the right info for them.

[darky82]

Ok managed to call Powerflow today and they said the injectors I have are 22lb and 230cc

[Holden202T]

they might be ok, really just need to see what the duty cycle is higher in the rev range. alot of people use the blue tops which i believe at 24lb so hopefully 22 is enough!!

[darky82]

I will double check again tomorrow because the injectors I was sold are ment to be a better design than the blue tops so should have same rated pressure and flow if not better?

[Holden202T]

what brand are they and whats the part number on the side of them ?

[darky82]

I think they are a bosh replacment not sure package said powerflow, around $65-70 each