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Tex’s Lotus Exige Cup 430 - Page 24 - V6 Exige Projects & Upgrades - The Lotus Forums #ForTheOwners Jump to content


Tex’s Lotus Exige Cup 430


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10 hours ago, Martrack said:

Tex, thank you again for your experience sharing 👍
Last question, still using default anti roll bars and chassis heights settings ?

Yes at the moment 

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Out of interest, what was the recommendation for softer spring rates?

i recently upgraded my 380 to Nitrons and went with the slightly softer than factory settings - l went with the 500/850 rather than the factory 550/1100 - happy with them and note that a few people offer softer than standard Nitrons - Komotec, Seriously Lotus, but also wonder what factory is like.

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13 hours ago, Five50 said:

Out of interest, what was the recommendation for softer spring rates?

i recently upgraded my 380 to Nitrons and went with the slightly softer than factory settings - l went with the 500/850 rather than the factory 550/1100 - happy with them and note that a few people offer softer than standard Nitrons - Komotec, Seriously Lotus, but also wonder what factory is like.

550/850 for a road biased car but with a handful of track days pa. 

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  • 2 weeks later...

Well I have finally succumbed to the fact I need to fit a quieter track focussed exhaust. 
 

You can only short shift for so long ! Black flagged at Donington recently and 2 warnings at Silverstone last week.

After some research it comes down to which 2Bular exhaust I fit, the QP or  Track/Road. Both could also have 350mm track cans fitted to further reduce noise if needed.

https://www.2bular.co.uk/exige-380

With Brands, Thruxton, Bedford etc all having no more than 92db driveby the Track/Road system is probably not going to work even with cans, but I mainly do Donington and Silverstone which would be fine with T/R

Dilemma is the T/R is lighter, better aural sound  ( won’t swap exhaust out between track days) for on road use, less expensive and hopefully should get me on many UK circuits without needing to short shift but:

QP will get me on most tracks and less  concerns.

So any experiences of these exhausts would be greatly appreciated 

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I have the QP (with full 2bular manifolds and sports cat / link pipe) and it’s been excellent. No issues at most tracks even without the add-on cans, and currently coping well with 500hp. I find the sound is actually pretty good too, although obviously not a patch on the OEM 430 noise.

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9 hours ago, Mattmahope said:

I have the QP (with full 2bular manifolds and sports cat / link pipe) and it’s been excellent. No issues at most tracks even without the add-on cans, and currently coping well with 500hp. I find the sound is actually pretty good too, although obviously not a patch on the OEM 430 noise.

Interesting information Matt, so even with the QP system there has been some noise issues.  What tracks were this on ?

Initially I was all for the Track Rd system but the QP seems a safer bet from your comments and a couple of others on here and PH

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I have had no issues at Snetterton, Brands Hatch or Spa since I fitted the system I have (which is full 2bular manifolds, downpipe, sports cat, and valveless track silencer). I have not yet had to fit add-on cans. Will be at Goodwood next week and would expect the same i.e. no issues hopefully.

Personally I would rather get the quietest system possible to avoid any risk at any track, rather than showing up each track day worried about whether I am going to get on track or get black flagged. This is especially the case if you have the option to switch to a loud exhaust for road use (which at the moment I do not).

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Thx for all the input 

2 hours ago, Mattmahope said:

I have had no issues at Snetterton, Brands Hatch or Spa since I fitted the system I have (which is full 2bular manifolds, downpipe, sports cat, and valveless track silencer). I have not yet had to fit add-on cans. Will be at Goodwood next week and would expect the same i.e. no issues hopefully.

Personally I would rather get the quietest system possible to avoid any risk at any track, rather than showing up each track day worried about whether I am going to get on track or get black flagged. This is especially the case if you have the option to switch to a loud exhaust for road use (which at the moment I do not).

Thx for the input. 
 

Spoke with Jim and have ordered the QP system for non tubular installs. 
 

Looking forward to getting above 6000rpm now !!

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  • 1 month later...

Well it’s been a bit of a marathon to say the least ! but picked up my Cup 430 today after having a quiet exhaust fitted.

Had a few other items attended to and  a Stirling job done by Lotus Silverstone. A big thanks to Matt and the team.

Clearly a lot quieter than the Ti silencer but will allow more meaningful track days and also with the additional cans the opportunity to perhaps try Thruxton, Brands and Snetterton.

Did weight comparison with the full stock system 15.5kg, full 2bular 21.5 and Komotec System with the stock Ti silencer 20.1kg.
 

Was a little surprised by that but the small Toyota cats in the manifolds can not be greatly effective.

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