Dirtbikekid1998
TY 4 Stroke Junkie
- Joined
- Mar 3, 2013
- Messages
- 527
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- 27
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- Maine
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- Snowmobile
- 2014 Yamaha Viper LTX SE Hurricane 190hp Turbo.
no its just sitting in there warehouse waiting for the new controller right now.. its been in the high 40s and low 50s for the last 2 weeks and nights are only getting into the high 20s, with no sign for cold weather next week either in central Maine... i am really hoping for cold weather! we need snow i am going crazy!
- Joined
- Nov 29, 2009
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- sabattus, maine
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- USA
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- 76 exciter, 87 phazer, 89 bravo, 00 srx x3, 01 srx, 02/04 viper, 06 ape
Where you at dirtbikekid? I'm out of sabattus. Sorry off topic
Joe ltx-le
TY 4 Stroke God
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- Mar 26, 2015
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- 2017 sidewinder ltx-dx
Even northern newbrunswick is warm today. We must still wait
Dirtbikekid1998
TY 4 Stroke Junkie
- Joined
- Mar 3, 2013
- Messages
- 527
- Age
- 27
- Location
- Maine
- Country
- USA
- Snowmobile
- 2014 Yamaha Viper LTX SE Hurricane 190hp Turbo.
hey another Mainer! im out of Madison. usually first week in January everything is frozen and trails just opened...
- Joined
- Nov 29, 2009
- Messages
- 1,230
- Age
- 49
- Location
- sabattus, maine
- Country
- USA
- Snowmobile
- 76 exciter, 87 phazer, 89 bravo, 00 srx x3, 01 srx, 02/04 viper, 06 ape
That's not central Maine. ....that's south northern Maine..lol
Yeah this winter isn't looking good so far.
Back to topic
stingray719
TY 4 Stroke God
I have a standing bet I can make a Viper show insane low HP numbers by botching the clutch setup on a Viper running on a TRACK DYNO. You are measuring power to the track via the clutch, even at full shift out the presence or lack thereof belt slippage comes into play. After all if only a dyno mattered you would set your clutch for 8600 rpm as max power. Real world isn't a dyno
100 % agree but none of the Hurricane numbers are from a track Dyno. Engine only. The Am snow numbers were also engine. Is no doubt somethings afoul on one of them.
STAIN
Lifetime Member
- Joined
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- 2022 SIDEWINDER LTX GT
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It sounds like the muffler on that MPI kit was restricting the power out put. That seems like what Dave was implying. If he says that particular sled made 141 hp on his dyno that day then I have no reason to doubt him, that is probably why it was there, to find out the problem. I am not saying all MPI turbos are 141 hp, but that one was, that was the problem.
Dave has always been a stand up guy, immensely helpful, knowledgeable with great products at good prices. I think people might want to think twice about implying that he would post B.S. dyno numbers on here to promote his own products. His products speak for themselves.
Dave has always been a stand up guy, immensely helpful, knowledgeable with great products at good prices. I think people might want to think twice about implying that he would post B.S. dyno numbers on here to promote his own products. His products speak for themselves.
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stingray719
TY 4 Stroke God
I think we agree he saw those numbers, just that they might not be numbers we see....like something wrong with that one sled.
I can see restriction causing hp loss but you would think it would have trouble spinning the turbo to 5#'s and actually running if it was losing 25% of the power it should have made
Yes hopefully he understands that by posting those numbers people including me are almost compelled to ask questions. I would like to see afr's for that MPI. Heck even a bad connection at tuner could account for it but would show as very lean.
The same type thing happens Everytime someone says their NA viper is a 110mph sled just because it did it once. It causes big expectations that aren't realistic. Is reason why I won't ever claim over 95mph on mine. Once doesn't mean a thing. Somethings shouldn't be said.
tator
TY 4 Stroke Junkie
not sure why you guys are second guessing dave. he has been nothing but helpful with every bit of info he has provided. as far as the exhaust not restricting the motor that much, haven't we all experienced or read about the problems some are having riding in deep snow when it blocks off the exhaust? almost complete power loss. if the turbo is producing 4.5 lbs of boost and the exhaust takes 2 lbs of force to move the volume air at 8800 rpm that is only 2.5 lbs of boost net into the chambers. there could also be setup factors that resulted in the power loss. but dave brought a 180 mpi kit with his programming and injectors to 183 on the same dyno on the same sled. while having an afr at 11 flat which mpi can't do without a 4 injector. but none mentioned that.
stingray719
TY 4 Stroke God
Because I have an MPI trail turbo with trail muffler on the girlfriends Viper and it is so far ahead of 11hp gain over stock it is not funny. Another MPI turbo with EABC shut off was at Grand Mesa and even that one at 4.5 was so much faster than stock it wasn't funny. Note all comparisons above are after 30mph vs stock.
So explain why Dave says they are only 11hp more than stock and all ours are much more please?
We give him the benefit of the doubt that he had a bad machine, but it should be said that is just one sled.
Mountaintech
TY 4 Stroke God
Where are MPIs AFRs without the 4 injector?
