Getting ready to build my TNytro and wanting to compare these 2 turbo setups. I was pretty set on the Impulse but seems the more i look around more people are running the MCXpress over the impulse. Just wanting opinions on these 2 setups preferably ones that have one or the other and why they chose one over the other.
MCXpress vs Impulse
- Thread starter philsummers21
- Start date
Well, MCX has been around for quite a while longer, RX1s, Apexes, etc..
Lots of years and lots of proven miles. MCX seems to be the easiest for a non-tuner or someone who just doesn't wanna tinker. Which has its pluses and minuses in the end.
Impulse, I think has really proved themselves these last couple season though.
MCX is a rear mount, Impulse is mid mount. So, turbo lag is typically less with the Impulse (or any mid mount).
MCX has a muffler, but dumps out the back (above the tunnel), where as Impulse has a tunnel dump [no muffler] and dumps on top of the track at the front of the tunnel/bulkhead.
I own and run an Impulse Nytro, purchased from Paul.
Paul definately has the customer service/relations thing down. He will take care of you, and get you dialed and up and running. He knows his stuff, he rides his stuff, and that makes a big difference when you run into questions or need tuning help or suggestions.
Being as Impulse uses a fuel controller and 2nd fuel pump, there can be some "dialing in" of fuel delivery.
This is one area where MCX and Impulse differ.
MCX you have no control or way of changing fuel delivery (by what I understand), its automated, or simply preset. This is good and bad.
Good, because you have nothing to adjust or "dial in" persay. Turn key, pull trigger..and you get what you get.
Bad, because you have nothing to adjust.
(Yes, same as above.) You can clean up the bottom end/mid range some with the fuel controller (in the Impulse kit) and find a lil more snap (throttle response). And also have the ability to control fuel when "on boost". Along with fuel pump (fuel pressure) adjustments.I'm very happy w/ the Impulse setup. I'd definitely recommend his kit. Very well put together and thought out. The turbo hanger/support is a great idea for relieving header stress from hard hits/drops/jumps, and just supporting the weight of the turbo in general.
That said, I have a couple buddies on MCX Nytros that I'm looking forward to riding with this season, to see how the 2 kits compare in a more direct comparison.
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T Nytro
Maybe this is not what you want to hear but for the Nytro Powderlites has my vote. Very similar to MCX but with 30 mor hp from timing controlled by fuel box. Way better set up IMO
Maybe this is not what you want to hear but for the Nytro Powderlites has my vote. Very similar to MCX but with 30 mor hp from timing controlled by fuel box. Way better set up IMO
I had an mcx last year and I have sold it and installing an Impulse race kit just about done with it, it depends on what you want out of it, the mcx is a good kit, it will not have the bottom end or make the hp the impulse has, what elevation are you at the mcx was not mapped correctly for 10,000 ft it still ran good but not like it should have. I put an extra fuel pump and regulator in mine and was able to control a/f readings with fuel pressure worked much better.if you want to be king of the hill the impulse is what you want. if you are happy with a good running 14-18lbs of boost no messing with fuel controller and a much softer seat the mcx will do that, I am very impressed with the impulse kit very well thought out and put together kit and Paul is great to deal with and available, problems with mcx is if you have a problem parts can be hard to get if the dealer doesn,t have them in stock. alot of problems with fuel controllers last year, hopefully they have that figured out. either way you will be happy, I wanted alot more hp. so I had to go with the Impulse.In my opinion you get more for your money with the impulse kit, 10 gal fuel tank, verses stock tank with mcx, I think mcx should lower thier price for what you get in the kit compared to what you get in an impulse kit for thr money.
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bigbull
Well-known member
I have owned both. Still own the Impulse and definitely prefer it. Rotax has the information pretty spot on above. I would also add that I had no real problems with my MCX until I rode above 9000' and then needed a fuel controller. It ran like poop at 10,000 and had to use a BD box to adjust fuel curve. Point being, I wasted an entire trip to Cooke City and was very disappointed. Otherwise had no issues with the system. Just like the real quick tuning, super fast response (zero noticeable lag)and the customer service of Paul at IMPULSE and will be buying more for our shop from him.
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Thanks for the replies. Pretty sure the Impulse will still get my vote. Sux im starting this project so late. Hoping to actually get it done before the snow flies
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Washy
Active member
I ran my MCX nytro from 12 psi to 18 psi and the only problem I had was the automatic boost compensator. Bought a hallman boost controller and everything was fine. MCX has a controller so you can adjust your Air/Fuel ratio as well. I would by the MCX again due to the reliability and ease of operation. I got sick and tired of always having to adjust fuel ratios with other kits. Alot of other controllers have take a dump. Not may MCX's though. I do not ride at 10000 feet though 7000-8000 is the highest. I not sure how many MCX controller had problems. First I heard of it.
A few fitment issues during install of the Powderlites kits though.
A few fitment issues during install of the Powderlites kits though.
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The MCX kit is adjustable if you can plug it into a laptop from what i believe so it is adjustable just not on the hill
There are so many good running kits out there. MCX has a proven track record. Impulse has done a great job proving itself last season. I orginally went with MCX for it's reliability and i would not be scared of the impulse kit.
Rotax and I will def have some fun talking smack this winter.
There are so many good running kits out there. MCX has a proven track record. Impulse has done a great job proving itself last season. I orginally went with MCX for it's reliability and i would not be scared of the impulse kit.
Rotax and I will def have some fun talking smack this winter.
I have an Impulse and ran against a mcx last year. Snowy1 had the mcx. He knows what he is doing and I would agree with what he said. Paul will help with questions about his kit or any other. I have seen the guy tune other peoples kits on the hill. He even went so far as to put one of his fuel control boxes on one guys sled to see if he had a problem there. He had just met the guy and still went that far and he hadn't bought anything from Paul. That is customer service, I believe that guy is going to run an Impulse this year. No kit is perfect, but I will take all the help I can get. I would go Impulse again no question. PARTS AVAILABILITY AND SERVICE!
Ditto. Paul is the kind of guy who will give you the shirt off his back and will always be there to help. Put that with some of the best cutting edge products and ideas in the turbo Yamaha world and it's hard to beat. Earlier this year when I had a mcx Apex I had the intercooler pop off. Paul rode up the first time I met him and stopped to see what was wrong. He had a 5 gal strapped on the back of his sled. I got the intercooler back on and to keep it from poping off again he took his $50 can of race gas off, hid it in the trees and told me to use the strap he was using to strap down my intercooler to keep it from poping off again that day. Small act, sure but this seems to be the common theme from him.
I really liked my mcxpress apex, never rode a mcxpress nytro but have been around Pauls Impulse Nytros and they are impressive to say the least. I recall seeing at least 3 mcxpress used Nytro kits for sale in swapmeets this year, I don't recall seeing any used Impulse kits for sale though...
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deaner
Well-known member
I dont own either kit, but have been thinking about setting up a nytro. I sent Paul a list of questions on his kits as long as my arm and he got back with answers the same day. If I do get a nytro I will definitely be getting an impulse from what I have heard about them.
I would have to agree that Paul's customer service is about the best I have ever delt with in the retail business, it is very impressive and he takes pride in his product and stands by it, no questions asked. I ran a boondocker kit for the last two years on my Apex and Paul help me to get it run right when boondocker gave up and they even installed it, so there is no question that I will be running the impulse kit this season.
I believe this is because MCX in general has a lot more kits on the snow.
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Duke
Well-known member
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twsandrew
Well-known member
I ran a competitors kit last year and Paul still took his time to help me out for free. He literally took his riding time on a nice powder day trying to help me sort my sled as well as many calls. I am running an Impulse kit this year because as everyone has said, Paul stands behind his stuff better than anyone else. Add to that the fact that his kits run super strong (race kit is the fastest out), he is putting as much or more into R&D than anyone and put more boosted miles on Nytros than anyone else last year. I love that there are a lot of great products out now. I just think Impulse has the clear edge.
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Can an mcx be piggybacked with a BD box to adjust fuel?
