M8 + aftermarket parts

[rinky]

I have a 2009 M8 that I just bought.

It was completely stock when I got it and I called speedwerx since I had some cash left over and asked what parts I could run without messing with the fuel or ecu

I just installed a ceramic y-pipe and Highflow intake from speedwerx.
I installed a SLP ceramic can too.

I have vforce3 reeds on the way.

I am wondering if running all this with 87octane pump gas would be a problem, I do plan to get to the mountains but a majority of my riding time will be around 2000ft.

 

[TheBreeze]

Did you ask speedwerx? I would start there.

 

[rinky]

I did, they said I should be fine. I dont like that word should haha.

I asked them what they would do to their sled with this given amount of money and they named off everything i bought so I was just curious if anyone else has done something similiar or what they think of the setup

 

[TGitt]

I would run 91 octane pump gas just to be safe. I run a Stock M8, and I never put anything below 91 in it. But I'm riding anywhere from 7500 to 11000 feet.

 

[MrClean409]

I would run 91 octane pump gas just to be safe. I run a Stock M8, and I never put anything below 91 in it. But I'm riding anywhere from 7500 to 11000 feet.

Stock M8s run best on 87 octane. The higher the altitude the less octane you have to run.

 

[backcountryislife]

Wanna know what parts to get for an 09 M8???

There's a forum for that.


Wanna know why you should have asked BEFORE you bought your mods???

There's a forum for that.


Wanna actually understand how octane works & why putting 91 in an M8 (pre 2010) is not only a waste of money, but also a way to lose performance... (ESPECIALLY at high altitude)

Yep, there's a forum for that as well.

http://www.youtube.com/watch?v=Ca6O8FR0rbQ

 

[TGitt]

Stock M8s run best on 87 octane. The higher the altitude the less octane you have to run.

Really? Good to know!

 

[rinky]

Just talked to speedwerx, they told me with everything im running it wouldnt hurt (obviously) to run premium BUT i should run 87 and see if the CEL comes on b/c the 09 m8 has a octane sensor, then il know for sure.

 

[TGitt]

Wanna know what parts to get for an 09 M8???

There's a forum for that.


Wanna know why you should have asked BEFORE you bought your mods???

There's a forum for that.


Wanna actually understand how octane works & why putting 91 in an M8 (pre 2010) is not only a waste of money, but also a way to lose performance... (ESPECIALLY at high altitude)
Yep, there's a forum for that as well.

http://www.youtube.com/watch?v=Ca6O8FR0rbQ

Could you give a link to that thread about how 91 Octane robs performance? I searched for it, but couldn't find it. I've honestly only ridden a Cat for half a season. And I ride it fairly high altitude so that knowledge could come in handy.

 

[backcountryislife]

It gets brought up pretty often in the cat forum (the forum referenced in "there's a forum for that").

I'm not an engineer, but essentially, with higher octane you decrease temperature of the burn, and in a cat at least it has an optimal temp & when you go too high with octane you get less performance. A cat runs best on 87 at sea level, which means it will run better on 85 at elevation, rather than going the other direction. Elevation decreases the need for octane, not the other way around.

It's sure as heck not intuitive, so if you didn't hear it, there's no reason that someone would assume that that would make sense.

Whole point of my post though, was that the cat forum would be a better place for this thread. (also a Y pipe, reeds, and intake are all the last mods most of us would do on an M8, Y & intake are losers to an extent & reeds are a waste of money.)

 

[rinky]

Can you explain why the intake reeds and ypipe are losers? It doesnt make sense to me.

 

[backcountryislife]

reeds aren't losers, they're just not winners either until you get a heavily modded sled. You'll see a small difference in throttle response... for the $$, WAY better things to do on an 8 (like a head)

Y is a TINY gain & loses power in other parts of the powerband, so you're robbing peter to pay paul. I like my midband power, & won't give it up for a very minimal improvement on top. Test two similar sleds one with Y one without, you'll see zero quantifiable difference.

Intake is like reeds, it SOUNDS like it's better, it feels a bit different, but the reality is next to zero change.

For the money you spent you could have gotten an RKT head, a port job, a clutch kit... any of those will make real differences you can see on the snow.

These things make the aftermarket companies $$, they're not going to tell you NOT to buy them, but Jeremy should have told you that there are better ways to spend your money. Even they have better things to do to an M8 that they could have pointed you towards. (the things that worked on the older sleds are different than on the newer laydown motors. Even most turbo guys are running stock reeds, just doubled up, or 1000 reeds on an M8T...)


Btw, as you mod further, those things will help the overall picture, so it's not a complete waste, there are just better things to start with.

 

[rinky]

Well damn... idk when im gonna learn to ask questions on the forums here BEFORE i buy ****, I just thought they wouldnt point me down the wrong path, not that they did but i was looking for a transform8tion not as u put it "stealing from peter to pay paul" kinda deal.

Thanks for the help though, its nice to know theres people out there.

 

[vdog0531]

i understand that companies like speedwerx are out to make money, but i'm hard to believe that a well known company would give out ****ty advice like that. I would dare to bet the convo started with this guy saying he wanted these things... so speedwerx sold them to him. either way, research before you buy!! there is an app for that... whoops i mean forum.

 

[Stack]

M-Series Forum would be a better spot for this thread!

I know it is after the fact, but for what you spent I would have looked at an SLP single pipe setup on that 09. Lot of people on here with extensive knowledge, I always search the forums so that I ensure Im buying parts that will actually make more power on my sled!

John

 

[rinky]

Lol wow some of the comments on here since i last looked are pretty humerous... no i didnt tell them what i wanted, they simply told me what I could do to gain power(or whatever) WITHOUT using a fuel programmer of any sort...

I straight up asked them with this kind of money what would you do without using a programmer and all the things they sold me are what they told me they would do. Simple as that.

 

[rinky]

M-Series Forum would be a better spot for this thread!

I know it is after the fact, but for what you spent I would have looked at an SLP single pipe setup on that 09. Lot of people on here with extensive knowledge, I always search the forums so that I ensure Im buying parts that will actually make more power on my sled!

John

And a pipe woulda required a programmer