Modded collectors

redratbike · Jan 15, 2014

I dont get on here very often but a few guys have come over to rsvzone to ask

redratbike modded collectors
ok guys you've seen the threads

http://apriliaperformance.myfastforu...tml&highlight=

Aprilia RSV Forum

you get 10BHP midrange + 3BHP topend as dyno tested on our very own GRIFF'S bike.(aprilia performance)

These work nicely with an airbox and different EPROM ( forza aprilia doing good chips at the moment)
more with a custom map if you run a pc3,,i've had nothing but very good feedback on these.

Originally designed for the MRO aprilia race series for single pipe bikes so they didnt lose out to racers with twin pipe systems.

Â£120 exchange ,inc DHL / ups courier tracked delivery.

PLEASE NOTE!! this price is if you have a single pipe tuono collector to swap add Â£50 extra to enable a replacement to be purchased

please PM me with any questions

redratbike · Mar 31, 2014

OlafTuono · Mar 31, 2014

That's a lot of increased performance for a little money.

Too good to be true ?

redratbike · Apr 1, 2014

OlafTuono said:
That's a lot of increased performance for a little money.

Too good to be true ?

nope ...
But didn't realise my links were not working apologies

Here's the dyno sheet ..not mine but an independent test by Griff who runs aprilia performance

these were literally plug and play over an hour or so

Bike had an open airbox,chip and race can .....

redratbike · Apr 17, 2014

Bump ,riding season is upon us

Make the bike better with a modded collector

redratbike · Jun 1, 2014

redratbike · Aug 14, 2014

redratbike · Nov 20, 2014

no one wants more power for their tuono?

Lux · Nov 24, 2014

Me, me! I do!

My bike currently has a chip and sport can. Standard airbox with restrictor removed. Is the modded collector plug'n'play with that sort of setup?
I return the original collector to you once I've swapped them over?
Can you deliver to the mainland? (Luxembourg)

redratbike · Nov 24, 2014

Lux said:
Me, me! I do!

My bike currently has a chip and sport can. Standard airbox with restrictor removed. Is the modded collector plug'n'play with that sort of setup?
I return the original collector to you once I've swapped them over?
Can you deliver to the mainland? (Luxembourg)

it will work as plug and play but ideally a new eprom to suit would be better..forza aprilia or gabro can supply ..
we can do the swap subject to a deposit for the exchange .
i'll pm you
regards Mark

TuonoM · Nov 24, 2014

Guys dont hesitate to get one of these, it is a fantastic mod! And red does a quality job

redratbike · Nov 24, 2014

TuonoM said:
Guys dont hesitate to get one of these, it is a fantastic mod! And red does a quality job

thanks for that :thumbup

Paul D · Sep 16, 2015

I can't argue the dyno plots, which speak for themselves... all things being equal.

But can anyone explain how the added curved pipes actually enhance power given that the exit pipe is no bigger and some of the curved pipes face back into the flow of the other exhaust?

I could understand it if the pipe was mod'ed to streamline the flow, so the exhaust driven by the exhaust stroke of cyclinder no1 was creating a partial vacuum to pull the exhaust gases from cyclinder no2 when exhaust valve opens... and vice versa, etc.

But the way the moded pipes still have curves that feed backward into the other exhaust flow seems odd...

Sure there is a good, race proven, explanation... and look forward to seeing it!

redratbike · Sep 16, 2015

Paul D said:
I can't argue the dyno plots, which speak for themselves... all things being equal.

But can anyone explain how the added curved pipes actually enhance power given that the exit pipe is no bigger and some of the curved pipes face back into the flow of the other exhaust?

I could understand it if the pipe was mod'ed to streamline the flow, so the exhaust driven by the exhaust stroke of cyclinder no1 was creating a partial vacuum to pull the exhaust gases from cyclinder no2 when exhaust valve opens... and vice versa, etc.

But the way the moded pipes still have curves that feed backward into the other exhaust flow seems odd...

Sure there is a good, race proven, explanation... and look forward to seeing it!

changes the exhaust harmonics and improves the gas flow. The improved negative exhaust pulse hits the exhaust valves while they are still open along with the intake valves during the overlap period. More spent exhaust is removed. This allows more fresh air into the cylinder with each intake stroke. More air means more fuel can be added to the mix or the fuel that is already there can be burned more completely. More fuel burned per power stroke means more power. The rear cylinder with the stock exhaust does not breath as well as the front so giving the rear a little extra help is a good thing

i am about to change my design slightly for the added link pipe at the front to enter at an angle of approx 45 degrees and will be dyno tested again soon to see if any gains are made

at the end of the day it works and there is probably a lot that can be done with altering the diameters of pipes to find the optimum combination of the 2 added link pipes on a dyno but that all costs money

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