MRF X-Pipe - 24 HP/18 TQ gains OVER the Akra Evo?!? Something's in the Kool-Aid

[s85e90]

Originally Posted by Malek@MRF

I am still not getting the point you are trying to get across? Why would I have to "fab" one up, when I have a few of them? I have fixtures and all CAD drawings for the systems.

Please read this thread carefully. The location of the X is only a part of the equation to making power. There are other pipes out there that moved the X forward from the stock position... This system was carefully engineered for the S65, taking many factors into account.

? I never said you should fab one up. If you reread, I said that rather than wait (as it's been 2 years since this thread began) a competent shop should be able to make an x pipe utilizing the crossover upstream such as yours/Gintani. I could never wait 2 years for an exhaust. I mean I have had 4 cars come and go in the past 2 years. Tomorrow isn't promised, I'll leave a few HP on the table to eliminate the cats today and still gain considerable power rather than wait for something that may never be had.

I was never knocking you or your product as you build nice stuff, just suggesting alternatives to waiting. That's the point of the forums; sharing knowledge. Unfortunately, we get attacked here if we stray off the beaten path. Probaly why my Hartge muffler hasn't sold b/c people are scared to run a rare muffler they are unfamiliar with. May as well follow the crowd and run Akra mufflers and BBS wheels!

[e92livin]

Originally Posted by Amirsm3

Ah I see what you're saying.

Again, just curious, valved exhausts don't entice you?

Not really, the only valved one that sparks interest is IPE. Then again I have this weird myth in my head that nothing can flow better than the OEM rear section.

[Amirsm3]

Originally Posted by e92livin

Not really, the only valved one that sparks interest is IPE. Then again I have this weird myth in my head the nothing can flow better than the OEM rear section.

Not a myth, per se. BMW engineers have millions in R&D. I'm pretty sure they wouldn't engineer something so restrictive to the point where you'll find a ton of gains just from the mufflers.

[Hujan]

Originally Posted by s85e90

? I never said you should fab one up. If you reread, I said that rather than wait (as it's been 2 years since this thread began) a competent shop should be able to make an x pipe utilizing the crossover upstream such as yours/Gintani. I could never wait 2 years for an exhaust. I mean I have had 4 cars come and go in the past 2 years. Tomorrow isn't promised, I'll leave a few HP on the table to eliminate the cats today and still gain considerable power rather than wait for something that may never be had.

I was never knocking you or your product as you build nice stuff, just suggesting alternatives to waiting. That's the point of the forums; sharing knowledge. Unfortunately, we get attacked here if we stray off the beaten path. Probaly why my Hartge muffler hasn't sold b/c people are scared to run a rare muffler they are unfamiliar with. May as well follow the crowd and run Akra mufflers and BBS wheels!

Hey, what did I do?

[s85e90]

Originally Posted by Hujan

Hey, what did I do?

you're ok!

[e92livin]

Originally Posted by pbonsalb

Line them all up and dyno them on the same car on the same day and I think you would find the differences to be pretty minimal. There really is not much to the design. I suppose the person making it could really botch up the fabrication, and that would hurt power slightly.

Put a topspeed x pipe (ebay) against Maleks or Gintani's I will garuntee the increase in power is a lot more noticeable and makes more power across the board. I have ran a few x pipe in the past and it boiled down to the Gintani x pipe because Malek's x pipe wasn't available at the time and the gintani x pipe yielded the best results on the street, track and dyno which is what matters in the end to me.

[e92livin]

Originally Posted by Amirsm3

Not a myth, per se. BMW engineers have millions in R&D. I'm pretty sure they wouldn't engineer something so restrictive to the point where you'll find a ton of gains just from the mufflers.

More bottom end due to back pressure I guess, I noticed it flows awesome so why touch it and possibly purchase a less free flowing exhaust system for more $?

[s85e90]

Originally Posted by e92livin

Put a topspeed x pipe (ebay) against Maleks or Gintani's I will garuntee the increase in power is a lot more noticeable and makes more power across the board. I have ran a few x pipe in the past and it boiled down to the Gintani x pipe because Malek's x pipe wasn't available at the time and the gintani x pipe yielded the best results on the street, track and dyno which is what matters in the end to me.

to be fair, why not put a Dinan or every other x pipe that looks like OEM in comparison to the MRF/Gintani setups. Otherwise people will say, "Well it's an Ebay x pipe so of course it makes less power". The x placed up further is the biggest factor here and I know of a couple other shops who are building x pipes for other platforms and seeing good gains as well from running the x up as close as they can fit it. Not without saying though that just removing the primaries still makes good power otherwise there would be no market for test pipes.

[e92livin]

Originally Posted by s85e90

to be fair, why not put a Dinan or every other x pipe that looks like OEM in comparison to the MRF/Gintani setups. Otherwise people will say, "Well it's an Ebay x pipe so of course it makes less power". The x placed up further is the biggest factor here and I know of a couple other shops who are building x pipes for other platforms and seeing good gains as well from running the x up as close as they can fit it. Not without saying though that just removing the primaries still makes good power otherwise there would be no market for test pipes.

Fair enough, I still think the MRF/Gintani x pipe will yield more power in the end.

[Amirsm3]

Originally Posted by e92livin

More bottom end due to back pressure I guess, I noticed it flows awesome so why touch it and possibly purchase a less free flowing exhaust system for more $?

This is true.

[MPowerZ32]

How much more power would MRF/Gintani make compared to the other catless pipes with OEM X location (Dinan, MS, or just simple test pipes)?

[whats77inaname]

Originally Posted by MPowerZ32

How much more power would MRF/Gintani make compared to the other catless pipes with OEM X location (Dinan, MS, or just simple test pipes)?

Sounds like it's time for an x-pipe shootout!

[W///]

Originally Posted by e92livin

Fair enough, I still think the MRF/Gintani x pipe will yield more power in the end.

Originally Posted by whats77inaname

Sounds like it's time for an x-pipe shootout!

I for one would love to see that. It's been way overdue IMO.

[pbonsalb]

Originally Posted by e92livin

Put a topspeed x pipe (ebay) against Maleks or Gintani's I will garuntee the increase in power is a lot more noticeable and makes more power across the board. I have ran a few x pipe in the past and it boiled down to the Gintani x pipe because Malek's x pipe wasn't available at the time and the gintani x pipe yielded the best results on the street, track and dyno which is what matters in the end to me.

I would want to see those street, track and dyno results comparing the two x-pipes as well as some comparing say, a Gintani x pipe to an MRF x pipe.