Power commander or MBRP header

[SledFreak]

You will actually lose power with just header on the bottom end. You will see it on the top end, but it will take forever to recover that bottom end loss.

Isn't that what clutching is for? Why do people care about bottom end?

When your throttle hits the bar, you will never ever ever see anything remotely close to bottom end.

I never understand these comments.

You lose about 10hp on the bottom and mid with adding a header. Clutching won't make that up.....

 

[SledFreak]

Hindle...still the only header to lose big power. MBRP makes a great product, I would not hesitate to run their header.

That's why I said they are RE-designing it for a stock muffler....

SledFreak makes a good point, you' can't lose by putting the filters on with a PCIII....Ulmer has it mapped so it's bolt on and go!

Shaddow, a little touchy on the Hindle are'nt we....

 

[ruffryder]

I never said clutching will make it up, but if your clutching is setup correctly, then you will only be at the bottom end during cruising / steady state conditions.

Punch the throttle, and the sled should backshift to peak rpm and away you go.

 

[SledFreak]

You will actually lose power with just header on the bottom end. You will see it on the top end, but it will take forever to recover that bottom end loss.

Isn't that what clutching is for? Why do people care about bottom end?

When your throttle hits the bar, you will never ever ever see anything remotely close to bottom end.

I never understand these comments.

The tq/hp on the bottom end is what gets the sled moving.... Or makes the sled nice a snappy with a great hole shot... What good would a sled be if you had the motor making all the power on the top end of the RPM range. It would take forever to get it moving....

 

[ruffryder]

The tq/hp on the bottom end is what gets the sled moving.... Or makes the sled nice a snappy with a great hole shot... What good would a sled be if you had the motor making all the power on the top end of the RPM range. It would take forever to get it moving....

That is incorrect. The tq/hp on the bottom feels big when you are at part throttle positions only. In a drag race, and you mash the throttle, the rpms go to peak power rpm very quickly, and the clutchs are supposed stay there until a full shift out occurs.

Think about all the snocross and race sleds. They don't have much on the bottom and are very peaky. Clutched right they are very very fast. Think about drag racing as well, a 5.0 mustang motor stock isn't that quick, but get cams, heads, intake, exhaust, and other parts that all take away from the bottom and give to the top, and your car becomes much much faster.

Having a lot of bottom end power does feel fun, but if you don't have it at the top it is a complete waste, especially with a CVT transmission.

You get into the deep snow, where you are running 3/4 to full throttle and that bottom tq / hp isn't doing anything, as you should be running 8-9k the whole time. IMO, with the Nytro's already super fat torque curve, I would love to get rid of a bunch of bottom end for half as much on top. The sled has too much bottom, IMO.

 

[Srxspec]

You lose about 10hp on the bottom and mid with adding a header. Clutching won't make that up.....

You can't be talking about the Excell header can you? Below 6500 rpm there is 3-4 hp loss. By 7000 rpm you are within a 1/2 to 1 hp and up from there it's all gains. Watch your tach cruising down the trail and see how many times you're actually below 7000 rpm.

 

[SledFreak]

You lose about 10hp on the bottom and mid with adding a header. Clutching won't make that up.....

You can't be talking about the Excell header can you? Below 6500 rpm there is 3-4 hp loss. By 7000 rpm you are within a 1/2 to 1 hp and up from there it's all gains. Watch your tach cruising down the trail and see how many times you're actually below 7000 rpm.

You are right, I was not talking about the Excell, but there are others that do fall off pretty hard on the bottom.

 

[ruffryder]

Watch your tach cruising down the trail and see how many times you're actually below 7000 rpm.

Agreed.

 

[SledFreak]

The tq/hp on the bottom end is what gets the sled moving.... Or makes the sled nice a snappy with a great hole shot... What good would a sled be if you had the motor making all the power on the top end of the RPM range. It would take forever to get it moving....

That is incorrect. The tq/hp on the bottom feels big when you are at part throttle positions only. In a drag race, and you mash the throttle, the rpms go to peak power rpm very quickly, and the clutchs are supposed stay there until a full shift out occurs.

Think about all the snocross and race sleds. They don't have much on the bottom and are very peaky. Clutched right they are very very fast. Think about drag racing as well, a 5.0 mustang motor stock isn't that quick, but get cams, heads, intake, exhaust, and other parts that all take away from the bottom and give to the top, and your car becomes much much faster.

Having a lot of bottom end power does feel fun, but if you don't have it at the top it is a complete waste, especially with a CVT transmission.

You get into the deep snow, where you are running 3/4 to full throttle and that bottom tq / hp isn't doing anything, as you should be running 8-9k the whole time. IMO, with the Nytro's already super fat torque curve, I would love to get rid of a bunch of bottom end for half as much on top. The sled has too much bottom, IMO.

While you make a good point about top end, you still need alot of torque on the bottom end for Typical trail riding, on and off the throttle. Not everyone is running 110 down the trails all the time all day long. It's literally impossible to go full top speed all the time...

Anyways'sI think this post is getting way over board. Either way for the amont of money the person who started this thread only wants to spend a little and I believe the filters and PCIII is the best bang for the buck, unless he is looking for all top speed.

 

[ruffryder]

While you make a good point about top end, you still need alot of torque on the bottom end for Typical trail riding, on and off the throttle. Not everyone is running 110 down the trails all the time all day long. It's literally impossible to go full top speed all the time...

That is why you want the clutches to backshift.

Anyways'sI think this post is getting way over board. Either way for the amont of money the person who started this thread only wants to spend a little and I believe the filters and PCIII is the best bang for the buck, unless he is looking for all top speed.

Agreed. I bought a filter kit used and will be putting it on this season, also with a PCIII. I built my own header for the sled already though.

 

[stephenpen]

I still want the header first. I do plan on getting the PCIII and filters but not right now. $255 for the filters turns into $350 by the time it gets to my door. Duty, taxes, brokerage fees............
I'll only run 91-94 octane to make it a little safer

 

[shadow44]

Hindle...still the only header to lose big power. MBRP makes a great product, I would not hesitate to run their header.

That's why I said they are RE-designing it for a stock muffler....

SledFreak makes a good point, you' can't lose by putting the filters on with a PCIII....Ulmer has it mapped so it's bolt on and go!

Shaddow, a little touchy on the Hindle are'nt we....

jk

 

[sleddingfarmer]

I still want the header first. I do plan on getting the PCIII and filters but not right now. $255 for the filters turns into $350 by the time it gets to my door. Duty, taxes, brokerage fees............
I'll only run 91-94 octane to make it a little safer

running higher octane fuel is a waste in my opinion. Unless you raise the compression of the motor.

Am I wrong here people?

 

[**sj**]

not only a waste but a drop in performance in almost every situation unless you raise timing with an ignition module..

 

[SledFreak]

I still want the header first. I do plan on getting the PCIII and filters but not right now. $255 for the filters turns into $350 by the time it gets to my door. Duty, taxes, brokerage fees............
I'll only run 91-94 octane to make it a little safer

running higher octane fuel is a waste in my opinion. Unless you raise the compression of the motor.

Am I wrong here people?

bang on correct..... You only need to run 91 or higher if you raise, compression or advance timing....