running 30PSI with 2.5 SD OS

[NICKY BOY]

taking delivery of my ERL SUPERDECK soon. 6 bolt, oil squirters, girdle, morel lifters,bronze lifter bores, swaintech coatings on pistons bearing etc......
motor is setup for standing mile.

now not saying that ill be able to push it that far nor do i know if my compressors can provide but what would be my options be as far as work around?

this is what came to mind as far as a work around:
rape the 255kpa line
or
install 3 bar map, make approriate scaling changes (what the hell everything else is scaled)

is there any truth that once BE is pegged that the e38 reverts back to PE?

[carlrx7]

nick,
id go stand alone at that level, alot to lose finding out the hard way. send me pics when that fast explodes!

[NICKY BOY]

nick,
id go stand alone at that level, alot to lose finding out the hard way. send me pics when that fast explodes!

That is gone....lsx 102 with NW.
Carl really wanna stick with DBW.
who even knows if I have enough compressor to make it. Probably not.

[LSxpwrdZ]

Do the e38's and coil packs have ignition problems like the LS1's do above 1k-1.2k hp?

[NICKY BOY]

Do the e38's and coil packs have ignition problems like the LS1's do above 1k-1.2k hp?

Not to my knowledge. Running Mitsubishi truck coils.

[5_Liter_Eater]

I kind of like the scaled 3 bar idea. I would have PE=BE anyhow. I don't think you'll find yourself in a PE and not BE very much anyhow. I know I don't but maybe it's different with a turbo car. I don't like the raping the 255 kPa line idea as you'd basically have to tune it for kill boost and live with it being richer on anything less.

[Snyper]

What about scaling the tune? Does that have any effect on the map sensor? If you scale by 50% shouldn't you have double the limit?

[DSteck]

Scaling for injectors has nothing to do with the MAP sensor.

[NICKY BOY]

I kind of like the scaled 3 bar idea. I would have PE=BE anyhow. I don't think you'll find yourself in a PE and not BE very much anyhow. I know I don't but maybe it's different with a turbo car. I don't like the raping the 255 kPa line idea as you'd basically have to tune it for kill boost and live with it being richer on anything less.

well bill it would only be rich at the 15psi range...not below that.

[edcmat-l1]

Put a 3 bar MAP in it, setup your linear and offset, then modify the axis' of the VE tables. BAM done! Resolution to 300Kpa.

PS, Nick, if you don't know how to do it, email it to me and I'll set it up and send it back. [email protected]

Edit: Nevermind. Won't let ya go any higher than 255Kpa.........

[carlrx7]

the only thing i can thing of is write down what your key on engine off map reading is.

then put in the 3 bar, and tweak the offset value so it reads what the previous sensor read.

that automatically scales your map values, you will need to redo your ve, but its all i can think of right now.

[FirstGen]

I've tried that. I couldn't get it to work correctly. There isn't any good work around that I have found with that ECU.

Stand alone engine management time if you are serious about doing it "right" like I know you are...

[NICKY BOY]

Put a 3 bar MAP in it, setup your linear and offset, then modify the axis' of the VE tables. BAM done! Resolution to 300Kpa.

PS, Nick, if you don't know how to do it, email it to me and I'll set it up and send it back. [email protected]

Edit: Nevermind. Won't let ya go any higher than 255Kpa.........

Thanks ed for posting. Yeah that's why I said its scaled too. Have to make a mental note that 255 kpa really is 310.

[NICKY BOY]

I've tried that. I couldn't get it to work correctly. There isn't any good work around that I have found with that ECU.

Stand alone engine management time if you are serious about doing it "right" like I know you are...

U might be right. At this point what stand alones are available that work well with a car that will spend 95% trolling the streets.

[FirstGen]

Sent you a PM on CF. I would run the new M84 ecu from Motec if it was my car.

[NICKY BOY]

Sent you a PM on CF. I would run the new M84 ecu from Motec if it was my car.

K

[super6ute]

Motec hands down.
Can still retain your FBW, plus incorporate your boost control, plus many other features.
I would use an M800, the M84 is a great value ECU but i think in this case you would benifiet from having the more user programable axis.

You might as well use their CDI 8 also while your their.

Just remember Motec is a top notch product but it is still only as good as your tuner.

[NICKY BOY]

the only thing i can thing of is write down what your key on engine off map reading is.

then put in the 3 bar, and tweak the offset value so it reads what the previous sensor read.

that automatically scales your map values, you will need to redo your ve, but its all i can think of right now.

live in the east part of PA so close to sea level. car apart now but i'd imagine 2.5 would read 93~kpa. so if i plug in zr1 map it should read somewere in the 87~kpa area. so carl tweak offset so that it reads somewere close to 93~ but leave sesor linear as OS only goes to 255. is that correct or change linear too?


thanks!

[5_Liter_Eater]

Offset only. Use the correct values for the ZR1 MAP and then subtract the difference of however much more than 255 kPa you expect to be from the offset. So if I expected to hit 290 kPa I would subtract ~50 from the offset. I haven't run any numbers but this assumes you are within the physical range of the ZR1 MAP.

[NICKY BOY]

Offset only. Use the correct values for the ZR1 MAP and then subtract the difference of however much more than 255 kPa you expect to be from the offset. So if I expected to hit 290 kPa I would subtract ~50 from the offset. I haven't run any numbers but this assumes you are within the physical range of the ZR1 MAP.

Bill thanks for responce.
So the 2.5 os will be able to handle a zr1 linear value? I didn't that it would as ve reads to 255. I thought that I'd have to scale, in my mind, what new kpa values would be.