Komo-Tec Vs Forced-Fed Systems
I was up at the Donington Lotus show at the weekend and had a good look around the Komo-Tec Turbodrive 250S, which is a Supercharging system, not a Turbo as the name suggests.
As a series 2 Exige owner I would like more mid range power than having to wait for the 6200rpm second cam. I am currently having the Lotus Motor Sport ECU upgrade done which has not been as straightforward as it should have been given the advice I received from Lotus Motor Sport. As many of you know this drops the 2nd Cam to 5700prm, which from the test cars I have been in is a great improvement. But I do wonder if it will be enough of an upgrade after a few months of driving.
While looking around the Komo-tec system I was told that the Turbodrive 250S increases torque between 3000 & 6000rpm, while putting a lower thermal load on the pistons, exhaust valves, engine bay and surrounding body/component. It also does not require any modifications to the engine block
What I like from my brief chat was that a lot was done not to increase the stresses on the engine or the cars components due to excess heat.
Now I have not had the chance to drive a car with the Komo-Tec Turbodrive 250S install. But I have been a passenger in the Weltmeister Forced-Fed car around Silverstone, which I must say was very impressive and for the same sort of money.
From what I see is that the Weltmeister Forced-Fed kit would give me 275-280bhp over the 250bhp of the Komo-Tec Turbodrive 250S.
Ok that�s 25-30bhp extra in Weltmeister�s Forced-Fed favour. Although I think that I could be just as happy with the increases torque between 3000 & 6000rpm of the Komo-Tec system.
Given that I want the extra midrange power for the roads and not the track. This is because I intend to use the car for driving mountain pass in the Alps etc. Where in the standard Exige I have found that the corners are to tight and you get so far off cam when pulling away again, that it struggles down the short straight and the cam change in the standard cars set up kicks in just as you want to start thinking about braking for the next corner.
My thoughts are so far;
The Weltmeister Forced-Fed kit would be rather nice, but would I use all that power in reality? Given the sort of roads I want to drive the car on I have also been advised that I really could do with a LSD with this kit.
The Komo-Tec might be a better power option for me and I might get away with not needing a LSD given that I am 25-30bhp down on the Forced-Fed kit. It might also put a lot less wear & tear on other components like the clutch.
Now I know that the more you upgrade the power on an engine the more stress it suffers from.
But I was wondering if anyone here has ether option?
Your thoughts on ether upgrade?
What possible problems will I likely face with ether upgrade?
If someone more techno minded could explain the pro�s & con�s of going down ether route?
Links
Komo-Tec
http://www.komo-tec.com/index.php/cPath/15...6c7debd16c8a413
Installers- Hangar111
Forced-Fed
http://www.forcedfed.com/elise/turbokits/forcedfed340.html
Installers- Weltmeister
http://www.weltmeister.co.uk/services-944-968-928.htm
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