Drivetrain RMW Exhaust Header choices
yeah, the guys that work on the other side of the shop are all big block guys and they said.... what are you building that for?
did you sell my buddy, victor, a new stroker? if not, there may be another one on the track down here. it's saturday, GO BIG RED.
wasn't Victor
sitting at the Husker bar getting ready for GO BIG RED!!!!!!
I have some dyno's of cars that I will have to dig up later
what you typically will see is the long tube will come in sooner and give more top end performance. The key though with the race header is it allows you to custom tune each car with the collector. Downside: LOUD and requires full exhaust modifications.
For the money and ease of installation. (not having to modify your current catback) the shorty does a great job. The most we have gotten with the shorty is 258whp. The most on the Race was 299.7whp
On the M45 279whp on the experimental mule
there are 3 other cars running 260whp+ on the race header
I have a few more engines sitting here ready to ship out that will make those numbers and 1 of them will be on a track down in Florida
what you typically will see is the long tube will come in sooner and give more top end performance. The key though with the race header is it allows you to custom tune each car with the collector. Downside: LOUD and requires full exhaust modifications.
For the money and ease of installation. (not having to modify your current catback) the shorty does a great job. The most we have gotten with the shorty is 258whp. The most on the Race was 299.7whp
On the M45 279whp on the experimental mule
there are 3 other cars running 260whp+ on the race header
I have a few more engines sitting here ready to ship out that will make those numbers and 1 of them will be on a track down in Florida
Regarding the numbers provided, they include a multitude of RMW goodies so from your experience what contribution (HP/TQ) have you seen from each header (a range). I appreciate that the numeric sum of the parts doesn't equate to total results but so many think of 1 piece at a time that this might be helpful.
The last thing if you don't mind is in what mod order or steps does a header come into play in your opinion. By this I mean in the past the first 3 mods were pulley, CAI and exhaust. I know you have changed the frame of thought in this regards so if one has a stock MCS and wanted to mod it right - where would you start and where on the "list" does the header appear?
the mods in my opinion should be these to start with.... biggest bang for the bucks
1.pulley (the pulley that is right for what you want the car to do)
2. header made for your application
3. cam to fit with header
4. tune (this will always need to be done after last part added)
5. possibly injectors
6. head (will now need big injectors)
7. custom catback
8. possibly w2a but needs to be high flow at this point
for your question , the different headers require different timing/air fuel maps to optimize them
1.pulley (the pulley that is right for what you want the car to do)
2. header made for your application
3. cam to fit with header
4. tune (this will always need to be done after last part added)
5. possibly injectors
6. head (will now need big injectors)
7. custom catback
8. possibly w2a but needs to be high flow at this point
for your question , the different headers require different timing/air fuel maps to optimize them
the mods in my opinion should be these to start with.... biggest bang for the bucks
1.pulley (the pulley that is right for what you want the car to do)
2. header made for your application
3. cam to fit with header
4. tune (this will always need to be done after last part added)
5. possibly injectors
6. head (will now need big injectors)
7. custom catback
8. possibly w2a but needs to be high flow at this point
for your question , the different headers require different timing/air fuel maps to optimize them
1.pulley (the pulley that is right for what you want the car to do)
2. header made for your application
3. cam to fit with header
4. tune (this will always need to be done after last part added)
5. possibly injectors
6. head (will now need big injectors)
7. custom catback
8. possibly w2a but needs to be high flow at this point
for your question , the different headers require different timing/air fuel maps to optimize them
Thanks Jan, I know this will help the newbies. Your list is quite different to the one that was available to me when I started (pulley, cai & catback) and that was just a couple years ago.
Jan, you'll never convince people its that simple...
Its so much easier and more expensive to buy a bunch a stuff, throw it on the car, and watch dyno less then stock, why would anyone want to take the easy way out?
Once I get my brakes and suspension sorted, provided I hang on to the MINI, which I'm leaning toward, I'll probably use your list above as my template. But like Bahamabart was hinting at, what I'd love to see is to take it a step further (and I know this is asking for alot, and may be more than you want to post, as there are many, many pitfalls with it) is a rough idea of what HP/torque gains you could expect with various combinations of cams, headers, head etc. I wouldn't hold you to exact numbers, that would be impossible, just range of what one could reasonably expect, and as for specifics on the parts themselves, anyone asking for the exact spec on a part, how it was machined, how it was developed, etc. would be flogged on the spot, that should be out of bounds. There will be a fair amount of variance from car to car--saw that first hand myself, but a list like that would be heaven, and would deserve a sticky....Some of these numbers are floating around here, it would be nice to have them all in one place as kind of a reference--you can even throw in the caveat "results will vary", so the its not taken as absolutes, but kind of a reference point. You've got enough stuff out there now, and enough different combinations that if you put something like that out, I think would it would be extremely helpful, provided EVERYONE will look at it objectively and not resume any personal vendettas/attacks, but that might be asking too much...
Its so much easier and more expensive to buy a bunch a stuff, throw it on the car, and watch dyno less then stock, why would anyone want to take the easy way out?
Once I get my brakes and suspension sorted, provided I hang on to the MINI, which I'm leaning toward, I'll probably use your list above as my template. But like Bahamabart was hinting at, what I'd love to see is to take it a step further (and I know this is asking for alot, and may be more than you want to post, as there are many, many pitfalls with it) is a rough idea of what HP/torque gains you could expect with various combinations of cams, headers, head etc. I wouldn't hold you to exact numbers, that would be impossible, just range of what one could reasonably expect, and as for specifics on the parts themselves, anyone asking for the exact spec on a part, how it was machined, how it was developed, etc. would be flogged on the spot, that should be out of bounds. There will be a fair amount of variance from car to car--saw that first hand myself, but a list like that would be heaven, and would deserve a sticky....Some of these numbers are floating around here, it would be nice to have them all in one place as kind of a reference--you can even throw in the caveat "results will vary", so the its not taken as absolutes, but kind of a reference point. You've got enough stuff out there now, and enough different combinations that if you put something like that out, I think would it would be extremely helpful, provided EVERYONE will look at it objectively and not resume any personal vendettas/attacks, but that might be asking too much...
Jan, you'll never convince people its that simple...
Its so much easier and more expensive to buy a bunch a stuff, throw it on the car, and watch dyno less then stock, why would anyone want to take the easy way out?
Once I get my brakes and suspension sorted, provided I hang on to the MINI, which I'm leaning toward, I'll probably use your list above as my template. But like Bahamabart was hinting at, what I'd love to see is to take it a step further (and I know this is asking for alot, and may be more than you want to post, as there are many, many pitfalls with it) is a rough idea of what HP/torque gains you could expect with various combinations of cams, headers, head etc. I wouldn't hold you to exact numbers, that would be impossible, just range of what one could reasonably expect, and as for specifics on the parts themselves, anyone asking for the exact spec on a part, how it was machined, how it was developed, etc. would be flogged on the spot, that should be out of bounds. There will be a fair amount of variance from car to car--saw that first hand myself, but a list like that would be heaven, and would deserve a sticky....Some of these numbers are floating around here, it would be nice to have them all in one place as kind of a reference--you can even throw in the caveat "results will vary", so the its not taken as absolutes, but kind of a reference point. You've got enough stuff out there now, and enough different combinations that if you put something like that out, I think would it would be extremely helpful, provided EVERYONE will look at it objectively and not resume any personal vendettas/attacks, but that might be asking too much...
Its so much easier and more expensive to buy a bunch a stuff, throw it on the car, and watch dyno less then stock, why would anyone want to take the easy way out?
Once I get my brakes and suspension sorted, provided I hang on to the MINI, which I'm leaning toward, I'll probably use your list above as my template. But like Bahamabart was hinting at, what I'd love to see is to take it a step further (and I know this is asking for alot, and may be more than you want to post, as there are many, many pitfalls with it) is a rough idea of what HP/torque gains you could expect with various combinations of cams, headers, head etc. I wouldn't hold you to exact numbers, that would be impossible, just range of what one could reasonably expect, and as for specifics on the parts themselves, anyone asking for the exact spec on a part, how it was machined, how it was developed, etc. would be flogged on the spot, that should be out of bounds. There will be a fair amount of variance from car to car--saw that first hand myself, but a list like that would be heaven, and would deserve a sticky....Some of these numbers are floating around here, it would be nice to have them all in one place as kind of a reference--you can even throw in the caveat "results will vary", so the its not taken as absolutes, but kind of a reference point. You've got enough stuff out there now, and enough different combinations that if you put something like that out, I think would it would be extremely helpful, provided EVERYONE will look at it objectively and not resume any personal vendettas/attacks, but that might be asking too much...
people want to believe it's the plug wires, coils , CAI's etc that do it
We are working on another version of catback to keep it QUIET on the race system. We have the street header system that is great sounding yet quiet.
The mufflers were built from the ground up approach. We have never seen another muffler quite like it on the inside. Let's hope it works.
should have some pics by the end of next week if all goes well
I am very interested and already started saving for spring when my Mini is on the road again.
Jan, does the Street Header come with a cat? (the picture looks like or is that a pre-cat). If it is, how many cells are there compared to stock cat?
Jan, does the Street Header come with a cat? (the picture looks like or is that a pre-cat). If it is, how many cells are there compared to stock cat?
Actually, I think Jan figured it out that its not a matter of convincing people but allowing results to speak for themselves.
Prior to Jan this was the only way to mod the car. Select the best components based on information had, put it all on the car and hope they are happy together. Of course the "tune" is a key piece in getting parts to work together. When I got my car tuned it seemed to pull the parts together and I got further gains yet I have not obtained the results that Jan has. So its either the tune fell short, the parts fell short or both.
What I hinted at is tough like you pointed out for you there would be numerous caveats - cars vary, with or without tune, ect..... As well as its the sum of all the parts plus tune that gets the results Jan has produced.
I have to catch a flight but I'll post additional thoughts later.
Once I get my brakes and suspension sorted, provided I hang on to the MINI, which I'm leaning toward, I'll probably use your list above as my template. But like Bahamabart was hinting at, what I'd love to see is to take it a step further (and I know this is asking for alot, and may be more than you want to post, as there are many, many pitfalls with it) is a rough idea of what HP/torque gains you could expect with various combinations of cams, headers, head etc. I wouldn't hold you to exact numbers, that would be impossible, just range of what one could reasonably expect, and as for specifics on the parts themselves, anyone asking for the exact spec on a part, how it was machined, how it was developed, etc. would be flogged on the spot, that should be out of bounds. There will be a fair amount of variance from car to car--saw that first hand myself, but a list like that would be heaven, and would deserve a sticky....Some of these numbers are floating around here, it would be nice to have them all in one place as kind of a reference--you can even throw in the caveat "results will vary", so the its not taken as absolutes, but kind of a reference point. You've got enough stuff out there now, and enough different combinations that if you put something like that out, I think would it would be extremely helpful, provided EVERYONE will look at it objectively and not resume any personal vendettas/attacks, but that might be asking too much...
I have to catch a flight but I'll post additional thoughts later.
Stinking dope dealer. I've got the shakes, just waiting for my header and cam.... 
ED955S - yep, street header comes with a cat (and is an awesome deal). I'll let Jan speak to specs...
ED955S - yep, street header comes with a cat (and is an awesome deal). I'll let Jan speak to specs...
a tale of 2 headers
the bottom is our race header which can be configured for stock head, RMW Big valve head ,the 1.8L or 2.0L stroker engine
the top header is designed for our 2.0L TVS powered stroker
notice the bigger collector, the stepped primaries and less choke
the bottom is our race header which can be configured for stock head, RMW Big valve head ,the 1.8L or 2.0L stroker engine
the top header is designed for our 2.0L TVS powered stroker
notice the bigger collector, the stepped primaries and less choke
it's all math isn't it?
a tale of 2 headers
the bottom is our race header which can be configured for stock head, RMW Big valve head ,the 1.8L or 2.0L stroker engine
the top header is designed for our 2.0L TVS powered stroker
notice the bigger collector, the stepped primaries and less choke
the bottom is our race header which can be configured for stock head, RMW Big valve head ,the 1.8L or 2.0L stroker engine
the top header is designed for our 2.0L TVS powered stroker
notice the bigger collector, the stepped primaries and less choke