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:aargh4: Ok, got a new 2011 Brute 750i and cannot pull the trigger on building snorks (using MIMB) or any other brand for that matter. I think I've read way too many forums on the topic and it's clouded my judgement as everyone is saying something different. I talked to Highlifter and they tell me I will absolutley need a programmer and I talked with Snorkelyouratv and they say absolutley not. As for all the forums, they seem to be split 50/50. Whats the deal??? The quad is stock except for 26" Executioners all the way around. Would like to eventually buy a rad relocation kit but have to get through building snorkels first. Would prefer not to have to purchase an additional $300 programmer just to add snorkels. Would kinda defeat the purpose of saving the money and making them myself. There are way too many quads out there with snorkels for me to believe that you cannot just add them and ride. It cannot be that big of a difference in air flow, can it???????? Sorry to vent, newbie with an expensive new toy and just want to do right by it................:thinking:
 

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lol , I hear ya fella , it can get pretty confusing when reading about certain MODS for your bike . Seem's everyone has a different opion on everything , which is fine , everyone has an opion and share what they have experienced with thier bikes . For me what I have done in the past , is read up on stuff, find what everyone is saying , wether it is good or bad , and then just tackle the job at hand and see what the outcome is like .

I will say this , MIMB has by far been the most help I get from ALL 6 atv site's I am on . Dont get me wrong , the other site's are good also , but I find the members on MIMB will help as much as possible , no matter what you ride . I know some are on a few of the other sites i am on also . But this site is hands down , the BEST IMHO for DYI stuff and even stuff bought off the net .

Try not to be discouraged with all the info out there , I know it can be confusing and discouraging , and sometimes looks like the task you want to tackle is more than what you think you can handle , but if you run into a problem , the members of MIMB will step up and help you out im sure .
 

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In MY past dealings with my old '08 brute 750 and not my wifes '09 650 brute is this: both of our bikes ran the same WITHOUT any sort of programmer....with snorkels alone. I have found after you add a upgraded exhaust or do the MIMB exhaust mod...you WILL need a programmer.

If I read what you are asking/saying, is it safe to assume that right now your not planning on putting a aftermarket exhaust on your bike or doing the MIMB exhaust mod?
 

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Right. If you do nothing else but snorkles, and the size and configeration makes no change in how the engine gets its air and now much, there is no need for any programer. Nothing less then 2.5" (3" preferred).

Add a pipe or gut the stock muffler then yes,.. programer time.
 

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I have 2" snorkels and a T4 Procircuit exhaust with no programmer. I do run a little bit on the rich side but not enough to really notice. I would suggest a programmer if doing exhaust as well but I don't think that it is a have to get type of thing. As for snorks only you should be fine with no programmer. I say go for it.
 

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I have 2" snorkels and a T4 Procircuit exhaust with no programmer. I do run a little bit on the rich side but not enough to really notice. I would suggest a programmer if doing exhaust as well but I don't think that it is a have to get type of thing. As for snorks only you should be fine with no programmer. I say go for it.
:agreed: I have been running mine with 2" snorkels and modded exhaust with no programer since it was new, for some reason it started glowing the headers I don't know why or what caused it. I bought a programer from one the Mimb members and all is good. All bikes are not the same you will just have to try it out and make sure there are no problems.
 

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Either way, you go with snorkels or stick to the dry stuff with the ladies. Best thing you'll ever do is protect the engine with "snorkels". I presently have 2" intake but need to rejet since the previous owner punched the mufler out. I'm eventually going to try the 3" but dang it time is always an issue. Carbed yes but still he changed the exhaust making the engine breath better which in turn changed the air fuel ratio. Glowing exhaust here as well.
 

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Right. If you do nothing else but snorkles, and the size and configeration makes no change in how the engine gets its air and now much, there is no need for any programer. Nothing less then 2.5" (3" preferred).

Add a pipe or gut the stock muffler then yes,.. programer time.
From what I have seen on here this is the closest thing to what is working. There is also the "brute factor", that no two seem to be exactly the same, even the FI models. I would not be affraid to snork it, but I would go with the 3" if it were me.
 

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just snorkels ...you will be fine ..been runnin 2" for 3 years...wanna go up to a 3" some day ..
 

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Discussion Starter #15
Awesome info guys, I think I'm just gonna do it. I don't plan on changing the exhaust and for sure don't want to stay on dry ground with the girls and non Brute owners, ha. Now what about the size of the intake? 2" has seemed to be the norm and work ok for so long but now I'm hearing lots about running 3"? Agreed about the Site, thanks again guys
 

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Awesome info guys, I think I'm just gonna do it. I don't plan on changing the exhaust and for sure don't want to stay on dry ground with the girls and non Brute owners, ha. Now what about the size of the intake? 2" has seemed to be the norm and work ok for so long but now I'm hearing lots about running 3"? Agreed about the Site, thanks again guys
Most people get by with the 2" but the truth is above about 3/4 throttle they do get a little rich. The ovel inlet works out to 2.19" so a 2" is already restrictive. Won't need the air though until closer to WOT so most mudders won't feel need. Just do the 3" and be done with it.
 

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Discussion Starter #17
Sounds good and I hate to beat a dead horse (bare with me) but it brings me to my original question: I've beel told that the EFI models can adapt very slightly to change in air/fuel mix but would need assistance via some type of programmer if a drastic upgrade were to be implimented. Going from a 2" to a 3" sounds like you're adding quite a bit more air then stock. I would think that if I was ok but already on the edge of being able to add snorkels with out adding more "harwdare", that now increasing the size of the intake by 50% would cause an issue? I guess what i'm trying to say is that while I understand I can add snorkels with no issues as long as I don't modify the exaust, what makes it ok to just increase the size of the intake without expecting issues? The intake and exhaust work inversley purportional, dont they?
 

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Sounds good and I hate to beat a dead horse (bare with me) but it brings me to my original question: I've beel told that the EFI models can adapt very slightly to change in air/fuel mix but would need assistance via some type of programmer if a drastic upgrade were to be implimented. Going from a 2" to a 3" sounds like you're adding quite a bit more air then stock. I would think that if I was ok but already on the edge of being able to add snorkels with out adding more "harwdare", that now increasing the size of the intake by 50% would cause an issue? I guess what i'm trying to say is that while I understand I can add snorkels with no issues as long as I don't modify the exaust, what makes it ok to just increase the size of the intake without expecting issues? The intake and exhaust work inversley purportional, dont they?
The EFIs just run maps. They are an open loop system. No adjusting for anything on the older EFIs anyway. On the Snorkle, the factory restriction is the inlet port on the airbox. You won't be changing that with a 3". Just making sure you don't add any additional restriction with the extra plumbing.
 

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you're making an assumption that the stock intake is 2 inches when its actually closer to 2 1/2 inches( not sure about your year brute)so then you are adding 20% not 50%. by doing 2 inch pipes you are slightly restricting air flow w 3 inch pipes youre giving yourself more air. you're not adding an inch you are adding a half inch which EFI brutes can "adapt" to.
 

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you're making an assumption that the stock intake is 2 inches when its actually closer to 2 1/2 inches( not sure about your year brute)so then you are adding 20% not 50%. by doing 2 inch pipes you are slightly restricting air flow w 3 inch pipes youre giving yourself more air. you're not adding an inch you are adding a half inch which EFI brutes can "adapt" to.

2.19" on the older ones.
 
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