Powder addiction Head. Yes or NO
- Thread starter RIZZ
- Start date
I agree with iqridr. It will give u much better throttle response and greater mid range power. Minimal on top end, but is an enjoyable mod. I Highly recommend it, u might have to add a couple grams of weight to prevent over taching...
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WesG
Well-known member
PA head
^ This is spot on. Much better low-mid range snap with a cleaner crisper running sled. Well worth the money for that alone. Did not notice any topend increase but much more consistant rpms on my sled. 7800-8100 all the time spring, early season, snow conditions did not matter. Makes for very easy clutching when the sled is that consistant.
^ This is spot on. Much better low-mid range snap with a cleaner crisper running sled. Well worth the money for that alone. Did not notice any topend increase but much more consistant rpms on my sled. 7800-8100 all the time spring, early season, snow conditions did not matter. Makes for very easy clutching when the sled is that consistant.
I'll be the Debbie Downer.
I think highly of Brad's products and knowledge but I found the head didn't give me as much as I got from a head on my CFI4. I had to run my ethanol fuel plug at 9K+ to keep the det sensor from coming on. So I was losing a little power by doing that. It seemed that I was better off running my sled with the stock head and non-ethanol plug. Now those with non-ethanol fuel might really enjoy this head. Or you can mix in some race/av fuel which I also tried. Just don't plan to make huge gains. You get better throttle response and a nice kick in the mid range. Brad's power curve shows that there is almost nothing on the top.
I think highly of Brad's products and knowledge but I found the head didn't give me as much as I got from a head on my CFI4. I had to run my ethanol fuel plug at 9K+ to keep the det sensor from coming on. So I was losing a little power by doing that. It seemed that I was better off running my sled with the stock head and non-ethanol plug. Now those with non-ethanol fuel might really enjoy this head. Or you can mix in some race/av fuel which I also tried. Just don't plan to make huge gains. You get better throttle response and a nice kick in the mid range. Brad's power curve shows that there is almost nothing on the top.
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2mileshigh
Active member
I was having the same DET issues when I first put my head on. I set my TPS up correctlly and bingo. No more DET. Give it a try Bug.
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dmaxd2500
Well-known member
A splash of race gas did the trick for me, like a gallon per tank of premium. Above 9000' had no problems with straight 91, ran great.
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gman086
Well-known member
How do you get higher det threshold with more compression? I typically see BugIto's results more often than not with most aftermarket heads tho there are a few that are much more efficient and can make up for some of that.
Also there are two versions - the cheater head where I'd argue you won't see better cooling and det is a concern; and then there is the billet head with much larger cooling capacity where I might agree with that claim. Having stated all this, I'm guessing it's worth the extra $100 for the billet head - correct me if I'm wrong.
Finally, most are reporting a need to go 2 grams heavier with clutch weights using these heads. If there's no HP gain up top then there surely is some torque gain and you're still benefiting. Again, correct me if I'm wrong.
Have FUN!
G MAN
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Ran my 13.6 to 1 from 6k to 10k+ on 91 octane without any deto problem. It was the cheater version. Wont ride without one. Ordering another for my 2013 real soon
Edit I did run the stock 62 gram weights to 10k. Clutching was spot on
Edit I did run the stock 62 gram weights to 10k. Clutching was spot on
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The "gottamodit" in me made me look, adn it is the one I would do if I was going to do it, but I bought my first brand new sled in 10 years for a reason: Ride it stock, have a 4 year warranty, and no screwing with it. I spent a HUGE number of hours building my M1000 last year, custom everything, 200 horse, blah blah. In the end, I sold it with 1/20th the amount of hours riding as wrenching. I was a sled tech for years, always messing with stuff. This year, I want to RIDE, with minimal wrenching and no head swapping if there is a warranty issue!
Plus, it would be nice to ride it and see if it needs anything before modding.
Plus, it would be nice to ride it and see if it needs anything before modding.
The reason I bet u were det'ing was u were over tacking with the additional power. The pro is very sensitive to this and if u are already close to the threshold and add more power, u will over tack out of the hole or in mid range power. Throw more weight at it and I bet no more det light.
I put one of these heads on my 11 pro, I won't be putting one on my 13. If you're going to put an aftermarket head on your pro make sure it comes from brad.
I agree with most of what's already been said, it does make it 'snappier' on the bottom and adds nothing to the top end. It's also really shiny which is important.
You could save a lot of money and just put a stiffer spring in the primary to raise your engagement and get a really 'snappy' bottom end.
If you're looking to spend money this a good way to do it, it's good value for the dollar but not a 'must do' mod.
I agree with most of what's already been said, it does make it 'snappier' on the bottom and adds nothing to the top end. It's also really shiny which is important.
You could save a lot of money and just put a stiffer spring in the primary to raise your engagement and get a really 'snappy' bottom end.
If you're looking to spend money this a good way to do it, it's good value for the dollar but not a 'must do' mod.
I won't trade my 4 year warranty for 10 HP, I don't even want to put a can on my new 13. Poo is poopy about warranty.
J
joshua335
Well-known member
Put mine on half way through season, was added power but IMO better mods are out there.
Mine's up for sale in Calgary, pm me for sweet deal.
run the stock head for a couple hundred miles, put the PA head on. If something happens, put the stock head back on. They'll never know.
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IQRIDR
Well-known member
The cooling of the hot spots above the exhaust valve is where I would guess most of the higher DET threshold comes from. I'm sure dome design plays part as well but I am no mechanical engineer or 2 stroke combustion expert. If you add weight and get the correct compression for pump gas at your elevation, and add weight to the clutch, with all other things equal, the sled will not DET as often. That is my experience in selling and installing about 50 of these heads the past 2 years.
Brad will vouch for the fact that I was the first person to try his head on the CFI-2 800 motor, and to me, once I added weight in the primary, the results were quite apparent. No monster top end gain, but the motor revs faster, needs more weight to spin the same RPM, and clearly hits harder in the bottom and mid, with a cleaner-feeling top end. Combined with a pipe and clutching, a stock sled doesn't stand a chance.
Besides like ICR said- it's really shiny.
Come on, I know where the motor should rev. I did add weight. I started at 62 and it wouldn't pull it over 10k. But stock I had the Pro at about 58.5. So I used 60's with the head. I also added the ethanol fuel plug back in as soon as this happened and the sled was happy.
