surfer

So i'm kinda stumped, i hope i can get this sorted cos i'm busting to get to the dyno and get some figures. It cant be anything too difficult i wouldnt have thought because the PP5 isnt too much different from the PM6, just need a bit of spare time........

88crxSi

are u european? some of their cars didnt come w/ o2's (which is why the ecu is throwing the code, if it's a US pm6)

surfer

Yeah am from England, we dont have such stringent emissions control so we dont have O2 sensors on them, I've since found which pin it is so i'm going to put a direct feed of the voltage that it needs so it will read as being OK and not give the CEL, unless anyone has any better suggestions?

kyle h.

but how do you know the base rom wont blow up the engine... :P

surfer

Why would the base ROM blow up the engine? not sure what you mean . . . .

blundar

the TE2 base rom will run a car almost dangerously lean on 450cc injectors. You really need to tune it a little to avoid doing bad things. I think that's what he means, because I'm the one who fucked up the fueling settings in the first place.

blundar

oh yeah, the PM7_try21 might be a little bit more sane because George (who whipped it up) isn't retarded like me.

kyle h.

from my experiences, any sort of a/f meter is important to have and something to detect pinging. but what do i know.

surfer

Ok I see what you mean, I wasnt planning on just burning a chip with a file and then driving the ---- out of my car, I needed to get my problems sorted out with the CEL's and then get a ROM that will run in my ECU reasonably so i can start with the tuning, and was just curious as to how people go about it to get an idea of what I should and shouldnt be doing.

Thanks for the info on the TE2 ROM, what size injectors are the fuel maps scaled for? are they lean even in the vacuum maps or is it just the boost side? As far as I am aware you cannot re-scale the maps by just putting the injector size into the editor as you could on TE1.29, I'm guessing I need quite a lot of fuel as it is a DOHC ZC. I know there are a lot of questions but the more I think I am learning the more questions I seem to think of, so, sorry and thanks

blundar

Couple things:

1. the TryXX series roms use the same size + shape tables for the NA region as a stock rom.
2. You could do far worse than to plagarize the NA JDM PM7 timing maps for the ZC.
3. The fuel maps in Dave's TryXX are intended for 450s and a B18B motor. The NA region runs 14-17 AFRs which sucks. Boost is much better... Xenocron posted a bunch of bins that are working better for him on PGMFI.
4. I wish TE2 had 2D mode, because the shape of the fuel curve at each MAP level should be almost the same between the stock PM7 and your recurved for XXXcc injector. The "spacing" between each line will be different due to the injector size difference, but the overall shape should be relatively similar. Look at some roms in Crome or UberData if you can't picture what I mean.