ZR8000 muffler shootout

[Thunder101]

Yes, but even at the 170HP, he is generous on fuel.

He is pulling or adding timing through PCV with timing contro

l. No need to add a key and get timing everywhere. Add it where you need and pull it where you don't.

yes I have one on my wish list

 

[High Country]

When will the round 2 numbers be up?

X2 ????

 

[Insaneboltrounder/sjohns]

Just looked. Not done yet !

 

[mmsports]

New Thread

I did not even look at this until I had heard it was up and started searching. What heck is a ZR 8000 anyway. Sounds like a trail sled,

 

[dynotechjim]

finally got the rest of them done yesterday--second brand new ZR8000:
stock 155.6hp,
Speedwerx 157.5hp,
MBRP 154.6hp,
SLP 156.0hp,
Bikeman 155.7hp,
Bikeman Powder Lite 155.2hp
Will try to have graphs/ weights/ dB/ backpressure/ CFM/ article posted on DTR this week. Also got Jaws with Jaws muffler data and a great Boondocker% and PCV map to email by Thursday (no PMs). Will ship all loaner stuff by UPS today or tomorrow. Thanks guys.

 

[RACINSTATION]

When will you have new info on your site?

 

[Justified]

Has anyone ran a super q or evo bullet can yet?? Just curious on how they both sound.

 

[summ8rmk]

AHHHHHHHHHH!
No thing cooker?????????

 

[kr ingebrigtsen]

My M800 is pulling 8200rmp, but if we see on the dyno graf it should not pull over 7900rmp??

 

[sledhead1]

My M800 is pulling 8200rmp, but if we see on the dyno graf it should not pull over 7900rmp??

Same here, I always heard 8150????

 

[Bigshow1]

Has anyone seen or heard a Diamond S?
I was wondering about the build fit / finish, as well as the sound Quality?
Some cans just sound good without being too loud...
Too bad the EVO didnt make the dyno testing...

 

[Macke]

Another question is, how accurate are the digital tach?
And if you join in on dynotech and look at differnt cans and leand out machines you'll se that the peak will climb.

 

[Adrenalinejunky]

My question exactly! HOW accurate are the tachs?

 

[mmsports]

dyno or on the hill testing

in our mountain testing 8200 is better on the hill than 8000. why?

my .02
Is that when it is loaded or need more it it's there due to the fact it is just above peak hp.

My M800 is pulling 8200rmp, but if we see on the dyno graf it should not pull over 7900rmp??

 

[kr ingebrigtsen]

Thanks, picked up a slp muffler to day, gonna order som cpc weights and start testing

 

[mmsports]

the rainbow can.

I can't figure how to insert a jpeg (asking for a URL address and I'm clueless on that). So here's the best HP we got from each muffler. For tech details like weight/ dB/ airflow/ backpressure and graphic comparison showing midrange torque/ HP curves and overrev power I'll try to post that tonight or tomorrow on my website. Also we still have more testing to do since the MBRP muffler should be here this week, and we still have to test SLP and BMP mufflers (got lost in the shuffle). So far all mufflers are good and often power varies with backpressure but not always. Ran each muffler two or more times, with coolant varying from 115 to 125f. This is the best HP from each (except we don't count the first test of the day with stock muffler--that nice cool crankshaft and crankcase gives us extra HP we don't count here--heat soaked only). Not shown here is the stock muffler with an insert to make it more like the 2010 mufflers, will have that on my website. Plus we got the Jaws single combo dialed in with spot-on PCV and Boondocker maps. It's a good A-B test that can be compared to our 2011 pipe shootout.

STOCK 155.2



SANDALE 156.3
DIAMOND S (titanium) 160.8 (highest sea level backpressure of the cans)
MPX 157.2
D&D 156.8
SNOWSTUFF RUMBLE PACK 155.1
JAWS TRAIL 156.1
HPS 156.1

Phase 2 SLP, BMP, MBRP (and anything else we can get) next week?

 

[Insaneboltrounder/sjohns]

Good thing it makes hp. Looks horrible

 

[summ8rmk]

Ur missing a bolt on the top pulley!

Ridin da Yamacat

 

[Thunder101]

Haha
The can looks sick lick that !!!! U crazy?
But good eye summ 8rmk

 

[Bigshow1]

Thats some wicked heat discoloration!