410/430 Exige KomoTec Upgrade

[Implus1]

Has anyone done a KT475 upgrade on their 410/430 and able to share their thoughts? Would you recommend it someone now that you’ve done it yourself?

[Rocketreid]

Yep,

I had it done.

In reality I think there are other options which may be as good if not better at a similar cost

The Harrop TVS 1900 Supercharger I believe is well worth considering and building your upgrade around that

[jmcvaughn]

Rocketreid said:

Yep,

I had it done.

In reality I think there are other options which may be as good if not better at a similar cost

The Harrop TVS 1900 Supercharger I believe is well worth considering and building your upgrade around that

Are you sure? EX475 is £5874 from Hangar 111 (https://www.hangar111.com/shop/exige-410-430/736-komo-tec-power-upgrade-exige-sport-410-ex475.html), TVS1900 is £6419 without chargecooler and £12,456 with it from Hofmanns with additional cost for tuning (https://hofmanns.co.uk/supercharger/ - might be reading some of the costs incorrectly mind).

Ignoring compatibility with the 390+ ECU, even SSC are quite conservative about power outputs (note that their discussion is about the non-chargecooled setup) and the torque figures aren't that high: https://www.simplysportscars.com/shop/superchargin...

Of course, different dyno, ambient temperatures, etc.

No doubt that a bigger supercharger will be more efficient but the stock Edelbrock unit is 1720cc (so not a huge difference) and chargecooled. EX475 seems to overdeliver in terms of power (520Nm/384lb-ft and 480+hp seem common).

If going for big power (500+hp) and all the supporting modifications (built engine etc.) then TVS1900 makes sense (and indeed seems to be the only route the aftermarket vendors are offering). <500hp, EX475 seems to be the best bet to me? Do correct me if I'm wrong!

[jmcvaughn]

Realise that SSC do provide a link for the TVS1900 upgrade for the 390+ cars: https://www.simplysportscars.com/shop/superchargin...

I believe my point still stands though. Going past 500hp, TVS1900 is the route but will cost a lot more money (and other engine upgrades will probably be needed). EX475 seems to be the most cost-effective way of getting near those figures.