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Old Jun 24th 2019, 01:47 AM   #91
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Originally Posted by oldmansan View Post
Do you have a tune? Hoping to get mine soon. Where did you get the exhaust? Is your dealership standing behind the warranty with the mods? Appreciate the feedback.

San
There's no tune out yet, PCV/Dynatek should be out in the next 60-90, Bren is working on something (hopefully sooner than PCV/Dynatek). Bought the exhaust off a forum member who runs https://soflosbk.com/ along with a few other goodies.

As for warranties...I see you're in the U.S., and we have the good ol' Magnuson–Moss Warranty Act. It covers mechanical and electronic "upgrades" or aftermarket parts to your bike. Anything you do to your bike does not "void" its warranty (it can have a warranty claim denied). It's such a silly concept that a dealer would even say this I find it funny. If you upgrade your handlebars and the turn signals stop working, do you think your warranty is void because you upgraded your handlebars? No.

The Magnuson-Moss Warranty Act puts the onus on DEALERS to PROVE that your MODIFICATION CAUSED THE FAILURE. This requires analysis, lawyers, and going to court, which costs more than a blown up engine. If you bring up this little tid bit in the U.S. dealers do not have a leg to stand on other than to 1. go to court and prove your mod blew it up (with PROOF, expert analysis, etc.) or 2. just fix your fucking broken part.

#2 is almost always cheaper...so they do it.

Just make sure you can put your ECU back to stock before you bring your blown up bike back in...that's an easy thing for them to point to :P
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Old Jun 24th 2019, 02:05 AM   #92
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Originally Posted by oldmansan View Post
They were all supposed to be in 5th gear for the pull. Nice catch.

San
Yeah that really surprised me! I know generally all the pulls are done in 5th and correct me if I'm wrong but wouldn't a lower gear affect the dyno measurement, especially since both the RSV4 and the V4R were done in 5th?

EDIT: I don't know if it will report different peak HP, but logic dictates that a lower gearing would move the hp/torque curve upwards, especially in the lower revs. Alas I'm no dyno expert!
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Old Jun 24th 2019, 02:21 AM   #93
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Originally Posted by AndreiD View Post
Yeah that really surprised me! I know generally all the pulls are done in 5th and correct me if I'm wrong but wouldn't a lower gear affect the dyno measurement, especially since both the RSV4 and the V4R were done in 5th?

EDIT: I don't know if it will report different peak HP, but logic dictates that a lower gearing would move the hp/torque curve upwards, especially in the lower revs. Alas I'm no dyno expert!
Yes it should be a 5th gear pull.

I was on the dyno all day with the 2020 a few days ago, did 3 runs each of stock, after race filter, and after full exhaust. Race filter added torque more than HP (about 2lbs tq), exhaust added about 5hp to the wheel and 1tq. Made it run a little less lean than stock but not much...the bike needs a tune and I think there's easily another 10-15hp especially with a system. Was doing 198hp stock after she warmed up on 2 pulls.
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Old Jun 24th 2019, 03:04 PM   #94
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In the 6-bike comparison, the BMW was run in 5th gear like all the other bikes. In the 3-bike comparison (all stock) the V4R was run in fifth, while the Aprilia and the BMW were run in 4th gear. There is a comment that says dyno runs are done with the closest 1:1 gear ratio

San
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Old Jun 24th 2019, 03:09 PM   #95
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Originally Posted by AndreiD View Post
Yeah that really surprised me! I know generally all the pulls are done in 5th and correct me if I'm wrong but wouldn't a lower gear affect the dyno measurement, especially since both the RSV4 and the V4R were done in 5th?

EDIT: I don't know if it will report different peak HP, but logic dictates that a lower gearing would move the hp/torque curve upwards, especially in the lower revs. Alas I'm no dyno expert!
The V4R was done in 5th, but the Aprilia and BMW were done in 4th. See my post above.

San
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Old Jun 24th 2019, 05:14 PM   #96
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How much bigger is the APRILIA GAS TANK?

I think that weighting them with a full tank of gas is not a correct or fair way to measure them

Maybe the aprilia is just 12 lbs more than the other 2
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Old Jun 24th 2019, 05:55 PM   #97
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Think the Aprilia is also the least fuel efficient so there's that
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Old Jun 24th 2019, 09:29 PM   #98
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Originally Posted by RODOLFO View Post
How much bigger is the APRILIA GAS TANK?

I think that weighting them with a full tank of gas is not a correct or fair way to measure them

Maybe the aprilia is just 12 lbs more than the other 2
I don't agree that weighing motorcyles to be tested mandates that the same amount of fuel should be used. The 'reward' of a fuel efficient motorcycle is that it can have a smaller fuel capacity, which would give it an advantage both in weight saved and/or distance covered. Even if the two bikes were racing and entered the pits at the same time, the fuel-efficient bike would have a shorter pit stop, all other things being equal.

This post is addressing the 3-bike comparison and 6-bike comparison where weight is concerned. I've already addressed horsepower above in this thread. Your comment mentions 12 pounds. 12 pounds would be 2 gallons of gas. That isn't the case as described below. T

The increased gas capacity of the Aprilia makes it 3 pounds heavier than the BMW and 4.08 pounds heavier than the Ducati (V4/V4R) if everything else was equal (it is not). The increased weight I've listed in this paragraph is ONLY relevant to the gas capacity.

In stock form the Aprilia was 457 pounds, the Ducati was 437 and the BMW was 436. That means the Aprilia was 20 pounds heavier than the Ducati and 21 pounds heavier than the BMW.

After modifications the Aprilia was 446 pounds, the Ducati was 423 pounds and the BMW was 422 pounds. That means the Aprilia was 23 pounds heavier than the Ducati and 24 pounds heavier than the BMW.

San
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Old Jun 24th 2019, 09:31 PM   #99
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Originally Posted by CSV4 View Post
Think the Aprilia is also the least fuel efficient so there's that
I think that's very relevant.

San
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Old Jun 25th 2019, 12:10 AM   #100
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So the guy doing the comparison may not eat, drink or go to the toilet while doing the measurements
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