Which manifold and sports CAT

Topics relating to the Lotus Exige S2 (series 2)
johnfishcurtis
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Feel like splashing some cash and looking at a manifold and sports CAT.

Have seen Seriously Lotus do the Komotec a £1487, Elise Parts at £1428, and 2bular at £1672
They all slightly differ in design with the primaries but the differences would not be noticeable on the road. Done a bit of research on line and not seen any failures with welds/joints on any of them.

As with any exhaust, manufacturers always claim bhp increase (Hanger 111 claiming 15bhp!!!!!).

Which would you put your hard earned £££ towards, does one stand out over the others?

Who has fitted and noticed a difference?
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Fonzey
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I think you're along the right lines, bhp gains need a big pinch of salt - most would need a remap/ecu to see the most from them anyway.

Providing they're all 200 cell cats, there's probably no real difference in flow restriction, so that just leaves build quality/longevity to judge them on. Good luck getting a fair/unbias opinion on that :lol:

Honestly? Buy on availability from a vendor you trust the most, so that IF you have problems - you know you've got somebody who will help you resolve it.

For me I fitted 2bular, but other choices were slim pickings at that time. For what it's worth, I've had no issues with the 2bular, it does as advertised and the car made good power with it (+20bhp after ECU fitted/mapped over the 260 map). For a car still running standard boost, it's not a bad power figure really so the manifold/cat should take some credit.
johnfishcurtis
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I would have to bite my pride buying from 2bular again and EliseShop will never get my business, so it limits me a bit for choice.

Being fitted to a 220 S with a TRD and Larrini silencer, I don't think a remap is needed?

If it let's it breath better, I would be happy. Certainly not expecting bhp increase above 1-2 bhp.
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Fonzey
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johnfishcurtis wrote: Sat Apr 17, 2021 10:49 pm I would have to bite my pride buying from 2bular again and EliseShop will never get my business, so it limits me a bit for choice.

Being fitted to a 220 S with a TRD and Larrini silencer, I don't think a remap is needed?

If it let's it breath better, I would be happy. Certainly not expecting bhp increase above 1-2 bhp.
If you've already got preferences of who not to shop with, then it does make things easier :)

I personally wouldn't run a manifold/sports cat without some sort of ECU tweak, but I'm firmly in the 'overly cautious' camp. The Factory ECU doesn't have any way to accurately measure fuelling and correct for rich/lean conditions so you're relying on the original map being conservative enough to cope with a change in either direction, which realistically it probably is.

Plenty of people run them without ECU changes, so I wouldn't expect engine explosions any time soon... but like I said, I'm overly cautious :mrgreen:
seriouslylotus
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johnfishcurtis wrote: Sat Apr 17, 2021 10:49 pm I would have to bite my pride buying from 2bular again and EliseShop will never get my business, so it limits me a bit for choice.

Being fitted to a 220 S with a TRD and Larrini silencer, I don't think a remap is needed?

If it let's it breath better, I would be happy. Certainly not expecting bhp increase above 1-2 bhp.
John I am somewhat biased as I supply the Komotec stuff, and will be installing one of the KT manifolds along with the rest of the S300 kit.
I would love to supply you with the Komo-Tec parts BUT...its a big BUT
For similar money buy a lotus 260 ECU some 440/450 Injectors and a fuel pump, This will give you 260bhp and a BIG boost in mid range torque.
The 220 doesn't open the throttle body fully, The 260 opens the throttle far more,
Therefore there are far more gains with the 220-260 upgrade than ANY manifold set up, Of course you can add the manifold etc etc later on, Or do like i did and add wither the S280 or S300 Komo-tec kit as a complete solution
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Fonzey
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seriouslylotus wrote: Sun Apr 18, 2021 9:36 am Therefore there are far more gains with the 220-260 upgrade than ANY manifold set up, Of course you can add the manifold etc etc later on,
Fantastic advice.

As far as tuning cars goes, the power/driveability upgrade you get from 220 to 260 on an S2 is really, really good value for money. The 40bhp to get from 260 to 300 is totally different ballgame in terms of costs. Believe me :lol:
johnfishcurtis
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Thanks all,

The reason not to go to 260bhp, my clutch and potential gearbox!😟
seriouslylotus
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johnfishcurtis wrote: Sun Apr 18, 2021 11:33 am Thanks all,

The reason not to go to 260bhp, my clutch and potential gearbox!😟
The Lotus 260 is pretty safe, Yes there have been failures on 260 cars but also on 240 and 220 as well. All I am saying is I believe that installing a manifold etc etc onto a 220 is not a good spend/return
The 260 is a far better option in my opinion
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6970K
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seriouslylotus wrote: Sun Apr 18, 2021 12:04 pm
johnfishcurtis wrote: Sun Apr 18, 2021 11:33 am Thanks all,

The reason not to go to 260bhp, my clutch and potential gearbox!😟
The Lotus 260 is pretty safe, Yes there have been failures on 260 cars but also on 240 and 220 as well. All I am saying is I believe that installing a manifold etc etc onto a 220 is not a good spend/return
The 260 is a far better option in my opinion
Totally agree with Dave, it is an awesome upgrade that I had on my 220 when it first became available about 10 yrs ago. I must have done about 20 track days with the upgrade (which was 288hp on rollers) before any issue with 3rd gear. Exchange box is not a huge cost and mine ran fine for 6-7 years after the 260 kit was fitted.
johnfishcurtis
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Location: Nottinghamshire

Have been mulling this over today.
Intentionally, I just wanted a better breathing engine, not specifically after more bhp. With a budget of £1500, as I have other things on the wish list.
With the above comments, I have done some research with upgrading to 260bhp. This puts the budget over £1500 and nearer £2000-£2500 with fitting.
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