Komo-Tec Exige S EX460

[Neal H]

Realistically, are there other upgrades required for this - clutch/gearbox spring to mind?! 460hp is now a long way from factory standard.

[Hangar 111]

20 minutes ago, Neal H said:

Realistically, are there other upgrades required for this - clutch/gearbox spring to mind?! 460hp is now a long way from factory standard.

Not aware of any issues with the 430 kits that are out there.  The 460 is still in testing, so no useful amount of data to go from yet - if you based it on that video, I think wheelspin would occur well before clutch slip!

Dave

[Freejack]

New video online, don't know how long it will take, until it's erased.

 

 

[alias23]

18 hours ago, Hangar 111 said:

The good thing about the exhaust is that there is no degradation in performance with the valve closed, so no need to worry about track noise, you can just leave it closed!

We don't have a price on the 460 kit yet, but details and prices of the other kits are in our online store.

Dave

Dave can you expand on the exhaust option and benefits please, specifically the following points:-

- Can you confirm the db of the exhaust with the valve closed and valve open

- When you say 'no need to worry about track noise' how do you ensure the valve remains closed when everything is in RACE and traction off... When by default the valve opens under these settings or at least when hits a certain rpm threshold?

- Are there any performance benefits from the exhaust install albeit a slight weight saving.
 

Thanks in advance.

[The Pits]

Sounds amazing and very responsive. Lighter flywheel? Absolute beast.

But there is a point where you soon get diminishing returns from adding more power and torque. Something like an R300 Caterham can be floored with reckless abandon, whereas the R500s require a bit more care taken on the throttle exiting tighter corners. As a result the R500 is actually losing time to an R300 over a lap, its gains this back on the straights but the difference in laptime between the two is closer than the power figures might suggest. Of course all of this is on road tyres. Up the grip and the R500 can use more power more often and it's a different story. The Exige is has no traction issues with 345bhp, there's definitely room for more power. But I wonder at what point the power might start to interfere with the way the car handles? 500NM in an Exige is certainly going to be interesting! Traction looks very impressive in the video considering the conditions.

[C8RKH]

From reading up on posts, I am sure I saw a posting from Jim at 2bular that referred to possible engine damage due to a back pressure build up if exhasut valves remained closed at high revs, say 5500rpm+ so would this not be a concern for track usage? First to admit I'm no expert so apologies in advance if I read this incorrectly.

[Neal H]

This is also my understanding. Also, (as standard) the exhaust valve opens when full throttle is used regardless of the setting.

[Bibs]

It opens at 4,500rpm irrespective of any settings.

[Hangar 111]

Sorry, my mistake, I was led to believe that there was an option to leave it closed.

As soon as we have one on a car at the workshop, I can get some realistic noise readings.

Dave

[Bibs]

That's on a standard car Dave, Komo-Tec may have bypassed this.

[Freejack]

Pits, this is the reason, why a lot of bikers are faster on a 600 than on a big bike. At a certain point you might need that balls of steel to twist the wrist or push the pedal.

The shown Exige seems to have a modified gear ratio and a LSD. It looks amazing, how the car accelarates in every gear.

Edited January 7, 2016 by Freejack

[Fortis]

Does this kit come with uprated driver and passanger toilet seats 

I think I would be leaving a set of twin wheeler skid marks in the bottom of my under pants after a ride out in a 460 

[Freejack]

For me you need to block the safety belt locks, to avoid escaping reflexes.

[Hangar 111]

1 hour ago, Bibs said:

That's on a standard car Dave, Komo-Tec may have bypassed this.

I'll clarify the questions with KT...

Dave

[alias23]

Thank you

[Bibs]

I've just merged two topics discussing this, hopefully it'll make sense still

[Kristof Thys]

3 hours ago, Hangar 111 said:

Sorry, my mistake, I was led to believe that there was an option to leave it closed.

As soon as we have one on a car at the workshop, I can get some realistic noise readings.

Dave

On the OEM back box, valve closed, the exhaust fumes go through a baffled/chambered (reflexion damper) design, with the valve open the fumes pass through a perforated tube (absorption damper).  For sure the KT exhaust is a straight through pipe without any muffling in the open position and a perforated tube in the closed position.  Same for the 2bular system.

 

Hence, valve closed on these systems, there is no more back pressure on the system than with the valve open.

Edited January 7, 2016 by Kristof Thys

[Snoopy1969]

Interesting:

on a german Lotus Forum there was a slightly large discussion if a "test drive" carrying that speed is reasonable, no one mentioned that at THIS PLACE :-)

[Trevsked]

That's because we are all MEN here. Unfortunately someone did mention it on TLF but his account is about to be suspended :-)

Trevor.

[Snoopy1969]

Oh, I just wanted this to be confirmed immediately :-) (beside from this already known fact I have to admit that I visit the german Forums very irregular because the "Quality" of the useres is partly a little bit strange...) 

[ramjet]

2 hours ago, Snoopy1969 said:

Interesting:

on a german Lotus Forum there was a slightly large discussion if a "test drive" carrying that speed is reasonable, no one mentioned that at THIS PLACE :-)

I did think it.

I'm sorry.  

[Freejack]

4 hours ago, Snoopy1969 said:

Oh, I just wanted this to be confirmed immediately :-) (beside from this already known fact I have to admit that I visit the german Forums very irregular because the "Quality" of the useres is partly a little bit strange...) 

In our forum most of the members were telling "it looks like a usual weekend trip"

[Snoopy1969]

...with guys that say that they are afraid to drive their Porsche Turbo fast ...........

[Advantage]

5 hours ago, Trevsked said:

That's because we are all MEN here.

Apart from the women. And one or two who could (and probably do) go either way.

[Freejack]

2 hours ago, Snoopy1969 said:

...with guys that say that they are afraid to drive their Porsche Turbo fast ...........

What's your nick over there?

Edited January 8, 2016 by Freejack