Nemesis and -07 S4R

[Keld]

Hi

Here is a a dynochart:


Before curve: Termi shorty, stock air filter and ECU.
After curve:   Termi shorty, DP air filter and Nemesis ECU.

The result was far better than I expected: +21% HP and +11% torque.

[TAftonomos]

No graph posted means

[Keld]

OOOps Bad link. fixed

[TAftonomos]

Not bad numbers, but looks like they could do better with the torque curve.

Who tuned it?  Any other mods other than the nemisis and the shorty termi?  Stock udder?

[Keld]

It was tuned in Sweden at Biscaya Motor Racing http://www.biscaya.com/
Only  motor mods is: DP  air filter, Termi shorty and Nemesis; so yes stock udder/cat ( which now will burn).

Yes the torque curve looks bumpy, but thats the math as the hp curve also is bumpy. For now the ignition is not tuned (as far as I know).

[CDawg]

<bookmarking>

Hot numbers!

[dbran1949]

Yes the torque curve looks bumpy, but thats the math as the hp curve also is bumpy. For now the ignition is not tuned (as far as I know).

You are right about the math, but you have it reversed. Horsepower is the result of the torque multiplied by the rpm. That is a seriously bumpy torque curve  have you ridden it yet?

[TAftonomos]

impressive numbers though.

a S4RS tuned by hypertrick on the stock ecu + full system did a bit better, however it had a FULL system. 

This data gives me hope that I might make something short like the ex box and still get the power I want out of it.  I know a few people said the exbox wasn't for power, but how and if it was tuned with that exhaust on it make a big difference (as shown by you and the stock udder).

Ported heads, big TB's, high comp pistons and the nemisis....I betcha I can make 155whp.

[Keld]

You are right about the math, but you have it reversed. Horsepower is the result of the torque multiplied by the rpm. That is a seriously bumpy torque curve  have you ridden it yet?

I have not ridden it yet, and will have to wait a few months. Just now the roads are icey as H...
So just have to wait :'(

Weather just now: http://webbkameror.se/byggkameror/borasenergimiljo/borasenergimiljo_1_640.php

[Moronic]

Yet more evidence that the key to extracting potential from the Testastretta Monsters is the ECU, with the exhaust playing only a very secondary role.

Fascinating. Thanks for the post.

[solstice0000]

I am based in Singapore-Malaysia and have a Zard full system exhaust & K&N high flow filter on my 07 Monster S4RS.  As is, with the stock ECU, my bike is very 'snatchy' in the lower RPMs/speed, but fine in the higher RPM/speed.  I bought the Nemesis 2 ECU from Brian Sharp @ Boulder Motorsports, CO, & it came with a map for my bike.  Mechanic installed it on my bike but it was way too rich that it burnt a spark plug shortly - idling really high @ 1.8-2K rpm.

Am sure its a great product BUT (here's the really important part for the rest of us who reside in this part of the world and NOT the U.S. or Europe), there was just no tuner in my neck of the woods knowledgeable about the Nemesis and, therefore, it couldn't be tuned to run in our local conditions. I contacted Mick Boasman of Competition Systems Ltd UK and he said:

"This is not unheard of, it seems your fuel over there has a significantly lower specific gravity which means that for one injection opening more fuel flows through it. So any maps made over here or in the USA run pretty rich for you guys, which is why your bike fouled a plug over the first days running.  We do not have any 'off the shelf' maps designed to run on your fuel but it should be a simple matter of reducing the injection time  globally which can be done in the software, keep dropping a few percent until you get it right, and remember to do both cylinders."

When I wrote back for more specific help as the tuners in Singapore and Malaysia are more product-specific (Dynojet PCIII or for Ducatis, mainly DP+Termignonis), Mick replied, "Unless you can find somebody local who can make these changes and understand how to it from the manual then you are in trouble...The manual is intended for instructing an engine tuner how to use the software, it is not intended to teach them how to do it. We presume that any tuner who wishes to use Nemesis already has engine tuning experience so simply has to adapt to some new software. We do not teach users how to tune engines."

So thats it, I have learnt lesson, possess a virgin Nemesis ECU to sell and now still need an alternate solution.  I'm fine with the higher RPM but need something to smooth out the lower range.  Any advice would be greatly appreciated - how about the FatDuc O2 Manipulator?

[yotogi]

So thats it, I have learnt lesson, possess a virgin Nemesis ECU to sell and now still need an alternate solution.  I'm fine with the higher RPM but need something to smooth out the lower range.  Any advice would be greatly appreciated - how about the FatDuc O2 Manipulator?

Replied in main Closed-Loop thread...

[solstice0000]

Noted and many thanks, yotogi!