Maximum power with stock exhaust?

[D-O]

Anyone have an idea how much power one can get from the S54 with the stock exhaust?

Jesse

[lemoose]

Anyone have an idea how much power one can get from the S54 with the stock exhaust?

Jesse

hmmm Can you be more specific? For instance, you could run a supercharger with your stock exhaust and be pushing numbers around 500hp- but I don't think thats what you're asking

[D-O]

hmmm Can you be more specific? For instance, you could run a supercharger with your stock exhaust and be pushing numbers around 500hp- but I don't think thats what you're asking

Good point. It will stay naturally aspirated.

Jesse

[Tbonem3]

Which parts stock, all sections? CSL headers and euro cats are "stock".

If you did cams and airbox/tune, but no exhaust mods, with stock u.s. headers, I'd guess you'd get to like ~320whp. You could also do zero mods except stepped headers/sect 1/tune and get to 320whp as well I believe.

[D-O]

Which parts stock, all sections? CSL headers and euro cats are "stock".

If you did cams and airbox/tune, but no exhaust mods, with stock u.s. headers, I'd guess you'd get to like ~320whp. You could also do zero mods except stepped headers/sect 1/tune and get to 320whp as well I believe.

Interesting. Your average bone stock E46 M3 makes something like 270whp? If so, I would not have guessed that a front to back SS V1 system would net you 50whp. Seems the current SS GB and a tune will get me farther than I thought.

Maybe I should have asked if their is anything to gained with any mods while retaining the stock exhaust. My previous engine mod experience is limited to old American muscle. The exhaust systems on those cars were so bad that it had to be addressed first if you wanted any gains from cam, intake, etc. I guess I want to know if these cars are the same.

And yes, I meant stock US spec.

Jesse

[Tbonem3]

Maybe not 50whp, but you'd be surprised. Tuning has come a long way, and SSv1s are the top dogs.

There are guys with 370-390whp with just bolt ons. So it's coming from somewhere.

[jbfrancis3]

Maybe not 50whp, but you'd be surprised. Tuning has come a long way, and SSv1s are the top dogs.

There are guys with 370-390whp with just bolt ons. So it's coming from somewhere.

Yeah they're coming from one tuner and quite frankly defy any logical explanation

[Sharocks]

Yeah they're coming from one tuner and quite frankly defy any logical explanation

Oooof.

Here we go lol

[jbfrancis3]

Oooof.

Here we go lol

Lol no no. Just some balance to that picture is healthy.

Moving on

[jet_dogg]

Yeah they're coming from one tuner and quite frankly defy any logical explanation

Boy you're goin in hard on Hassan lmao.

[Obioban]

Interesting. Your average bone stock E46 M3 makes something like 270whp? If so, I would not have guessed that a front to back SS V1 system would net you 50whp. Seems the current SS GB and a tune will get me farther than I thought.

Maybe I should have asked if their is anything to gained with any mods while retaining the stock exhaust. My previous engine mod experience is limited to old American muscle. The exhaust systems on those cars were so bad that it had to be addressed first if you wanted any gains from cam, intake, etc. I guess I want to know if these cars are the same.

And yes, I meant stock US spec.

Jesse

The average stock healthy e46 m3 make 270-280 Dynojet SAE correction RWHP. If STD correction, that bumps up to ~280-290.

[digger]

Yeah they're coming from one tuner and quite frankly defy any logical explanation

seems more about a certain dyno brand than anything, people have been adding a few % inflation each year and fudging numbers to "read like a dynojet"

people will say tuning has come along but not really a WOT is about the easiest thing to tune on an engine.

There is no standard internal measure for RWHP so its best not to read too much into it

[D-O]

Is there any consensus about how much power you can extract before the stock US spec exhaust becomes the limiting factor?

D-O