SolidWorksTTM
New member
Has anyone used these pipes. Are they good? WHat jetting used?
redsnake3
New member
very good top end pipes, i have 2 sets on my vipers and absolutely love them. jetting would depend on altitude and temps.
JohnnyQuest
Member
They rip!
yamaholic22
Active member
Yup those pipes fly but they definately like their fuel!
jason knowlton
New member
How much harder on fuel are they. I was also thinking of putting a Bender 4X4 pipe with silencer on my viper. I do some fairly big rides so fuel economy is sometimes an issue.
If you have good clutching and safe jetting youll be around 8-9mpg on average with these pipes, there isnt any viper pipewhere your gonna be getting great mileage, it doesnt exist, all that extra power comes as the price of extra fuel used, you wanna play you gotta pay.
I will say these are the best pipes for drag racing and or very aggressive riders, the pipes best for a trail sled would be the slp's. Both make excellant power, the slp are the quieter pipes.
I will say these are the best pipes for drag racing and or very aggressive riders, the pipes best for a trail sled would be the slp's. Both make excellant power, the slp are the quieter pipes.
journeyman
Active member
Too bad no one developed an aftermarket ignition for the Viper to get away from the ignition advancement (for piping). Remember the Vmax 4? They had an aftermarket ignition out right away for modding/piping. I am sure the FIII race at that time (Tim Bender) was the main reason that happened. I don't know any certain number criteria, but there has to be more Vipers out there than Vmax 4's that ever existed. Oh well....just dreaming....LOL!!
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redsnake3
New member
these pipes are designed to get out of the ignition spike that other pipes make there peak power at, causing most burndowns.
journeyman
Active member
redsnake3 said:
Yes I know, they run over and above the ignition spike. I used to run them. The problem is when you back out of the throttle, you pass through that rpm range again. Especially on a long WOT run and a back off of the throttle. I see there are a few that have tried the SRX's ignition. Not only the ignition on the Vipers, but the head too. I ran a Speedwerx on mine to level out the compression and get better cooling. My buddy ,that Mr. Viper did the BB780 kit, runs the CPR's with the Mega Power heads. Great runner!! Maybe he can explain...why the BB780's get better mileage than just a piped 700 Viper.??
redsnake3
New member
journeyman said:
when letting off throttle the rpm does not stay in the 8500-8900 range long enough to hurt anything.
jason knowlton
New member
What kind of fuel mileage should a stock viper get. And what set of pipes would be the closest to stock db range. Where i ride they frown on aftermarket exhausts, but if its close enough to stock they don't normally say anything. I'm just looking for a way to pull a little more power. I have Heavy Hitter weights and a HC-X roller secondary with a 42/34 and it works really well. Gives my buddy with an 2002 SRX fits.
journeyman
Active member
redsnake3 said:
That depends how close to the edge you are. Sure if you have a tempaflow, etc. and EGt's........but if not, she can pop. I ran mine hard at 30 deg. F one day and all was well. The next day I ran it hard and the temp dropped way off below 0 deg. F. and she blew on a long pull. A lesson learned I guess. If I would have had EGT's , I would have known I was on the edge, but I didn't. She popped right when I was was dropping out of it. That hurt my wallet a bit...LOL!!
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You will see the 780's do a little better because you change the head design and all the specs when doing a big bore, the squish clearance,squish angle, dome volumes are all changed in a big bore, the head has a giant effect on the way a engine runs and how efficiently it runs.
they(modded 780 heads) run better then a stock 700 head does, but I dont think any piped viper will ever get to the gas miser status of a srx with stock pipes etc, they can get 13-14mpg even with port work they still do this good, yamaha developed a heck of a good pipe for that sled!
I have built alot of piped vipers had a few for myself for trail sleds, never could get any better then 9-10mpg, the 9 is more avaerage the 10 being grandpa jones and just putt putting it along groomed trails, they like fuel to be able to live and perform.
they(modded 780 heads) run better then a stock 700 head does, but I dont think any piped viper will ever get to the gas miser status of a srx with stock pipes etc, they can get 13-14mpg even with port work they still do this good, yamaha developed a heck of a good pipe for that sled!
I have built alot of piped vipers had a few for myself for trail sleds, never could get any better then 9-10mpg, the 9 is more avaerage the 10 being grandpa jones and just putt putting it along groomed trails, they like fuel to be able to live and perform.