M54 - S50 comparison

[hoveringuy]

In an effort to see how the M54 and S50 compare (they each have their strong and weak points), I'm soliciting your Dynojet S50 runfiles so that I can plot the two together. They are both 3.0 litres.

Let me know what the mods are and I'll post them up on the same graph. E-mail the .drf to hoveringuy@yahoo.com I'll start with mine:

M54 OBD1, euro headers, OBD2 cats and muffler, TRM tune.

[matt]

Here's Dominic's S50 with headers and TRM tune.



He may have the run files, but I don't.

[Elysian]

In an effort to see how the M54 and S50 compare (they each have their strong and weak points), I'm soliciting your Dynojet S50 runfiles so that I can plot the two together. They are both 3.0 litres.

Let me know what the mods are and I'll post them up on the same graph. E-mail the .drf to hoveringuy@yahoo.com I'll start with mine:

M54 OBD1, euro headers, OBD2 cats and muffler, TRM tune.

Wow, good numbers. I don't have the original image anymore, or the runfile(never got those), but heres a copy of my dyno that someone overlayed theirs on(roughly)



The overlayed graph was a stock 330 dyno, I never dyno'd mine stock.

[balooshinakus]

Steve, we should get our cars dynoed together this summer, as that is the most accurate way to compare the dynos.

[Elysian]

Couldn't get ahold of Brady today to get his runfile, I'll keep trying though.

edit: Too bad I don't still live up in Washington, I was stationed at Bangor.

[hoveringuy]

Couldn't get ahold of Brady today to get his runfile, I'll keep trying though.

edit: Too bad I don't still live up in Washington, I was stationed at Bangor.

I'd like some S50 runfiles. How does a great cam and large intake play against DISA and dual-VANOS in the same displacement?

[Dominic49]

Here's Dominic's S50 with headers and TRM tune.



He may have the run files, but I don't.

matt if y'all still talk to art at dyno lab see if he can email you the file or whatnot I had it but lost it with a spare jump drive that it was on.

[matt]

Yeah, we are definitely cool with art. Like $1000 worth of cool last month...

I will stop by there next week with a jump drive. :)

[Dominic49]

Yeah, we are definitely cool with art. Like $1000 worth of cool last month...

I will stop by there next week with a jump drive. :)

also grab justin barnes run file to get a back to back to back comparison its from when he had the s52 in the track car.

[hoveringuy]

C'mon slugs... none of you get to keep your runfiles?

[Dominic49]

bam emailed!

[hoveringuy]

Here they are:

Dominics S50 vs M54.

M54: 1990 325is M54
3" MAF
24lb injectors
euro headers
stock OBD2 cat and muffler
X5 power steering pump
TRM custom tune
DISA and dual VANOS


S50: 1989 Bmw 325is s50
3.5 inch maf
24lb injectors
ebay headers
custom dual 2.25 exhaust
No Power Steering
Underdrive Alternator Pulley
Light Weight Flywheel
TRM Custom Tune



Justin's S52:
1989 BMW 325i
s52
ebay headers
2.5 single exhaust
OBD1 Manifold
OBD1 ecu
TRM Chip

[nrubenstein]

Looks about right. Doppelvanos really stomps all over the older engine at lower RPMs.

Also, it looks like the S50/52 both want cams pretty badly.

[Adrian_Visser]

I thought that the extra .2l the s52 has would give it some more hp. as well as a bit of torque. I guess not.

[JGood]

I thought that the extra .2l the s52 has would give it some more hp. as well as a bit of torque. I guess not.

It does. Different dyno's, different conditions, etc...