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View Full Version : E38 vs LS1



Highlander
September 9th, 2012, 10:41 AM
Which ECU will make the most power all else being equal?

Thanks

minytrker
September 9th, 2012, 11:07 AM
Same HP

Highlander
September 9th, 2012, 11:25 AM
You think so?
I don't...

I think with the E38 i can make more power...

Highlander
September 9th, 2012, 11:36 AM
Check this out

http://i908.photobucket.com/albums/ac287/highlanderc/102577e3.jpg

Same 440

One installed on a C5 z06

Other installed on a c6 z06

Same engine built by LME 440CID
Very similar cams not too different (both cams from LME)
Same Heads
Same LS7 Fast Intake... both non ported.

Same headers...

Ideally these cars should be very close together...

Highlander
September 9th, 2012, 11:38 AM
From that curve you can see as if that engine on run 17 lacks timing. If you put more timing in, it knocks and you can hear it.

Same thing is happening with my corvette that I built similarly to an ls7 from a customer. I should have had even more power than his as I went with lighter pistons and higher compression. Same cam/springs/ everything else.

Not the case... he is making easy 24rwhp more than I am. I obviously tune all of them.

Highlander
September 9th, 2012, 11:40 AM
I feel as if the 58x reluctor is more precise and it can read better the position of the engine and thus give the adequate timing or timing events on both injectors and spark.

Thanks

minytrker
September 9th, 2012, 03:07 PM
Your not comparing exact combo's and even then build 2 identical motors and one will make more power. You can even look at 100% stock vehicles, I have dyno'd several stock camaro's, TBSS, Vetts, G8's and even though 100% they will all vary some. Even though cams are similar they are not the same. Where they both degree'ed in? Exact same head gaskets? Way to many variables to think its the pcm IMO.

joecar
September 10th, 2012, 01:59 AM
I agree with Lorenz.

gmh308
September 10th, 2012, 02:27 AM
Both alloy blocks? Thats good power. What cam?

Highlander
September 10th, 2012, 02:51 AM
Both Al Blocks and Cam picked by Bryan @ LME... I have many other examples with this same issue at least 4... but its the combo not the ecu...