M54 - S50 comparison

[gregslow318i]

I think greg just used the stock e30 cats and pipes so it isnt that bad but could be alot better.

already did the beisn kit, cam timing is correct, I already know what the problem is but Im to lazy to fix it.
it needs a new fuel pump and the injectors cleaned also the exhaust would help a lot....

[e30s52]

I bet it is just that exhuast being super restrictive. Un-choke that bitch.

I think greg just used the stock e30 cats and pipes so it isnt that bad but could be alot better.

[MIKe30]

Check the cam timing on that motor, you probably have the intake cam a bit advanced.

I bet it is just that exhuast being super restrictive. Un-choke that bitch.

[balooshinakus]

Steve, if you want to get dynoed back to back against my s50 I'm free on weekends. Just let me know when you are settled in with your move and everything.

[nrubenstein]

Greg's torque curve looks like my S50 felt before I replaced the VANOS seals earlier this week. Well worth the $30 Beisan kit.

[hoveringuy]

Check the cam timing on that motor, you probably have the intake cam a bit advanced.

Greg,

I can measure your cam timing electronically. I would need another motor with known, good timing to compare it to.

[matt]

all stock s50 w/dinan chip stock e30 cat/mid and muff obd2 headers

Check the cam timing on that motor, you probably have the intake cam a bit advanced.

[Dominic49]

there

[Dominic49]

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

the s50 and s52 were dynoed same day one after each other in the same conditions.

[gregslow318i]

all stock s50 w/dinan chip stock e30 cat/mid and muff obd2 headers

[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...

[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.

[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.

[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

[Dominic49]

bam emailed!