Change of exhaust manifold?

Thinking of replacing the exhaust manifold on the Exige… I assume that this will show an improvement (level 2 and sports cat already fitted)

Is it an easy job for a local spanner monkey or a job for a specialist?

Is Piper the only option?

I dont see any point untill a non Lotus ECU is available.
You cannot change the map in any way so any gains you might get in the 1st week might all be ironed out by the Lotus ECU. Better to spend money on weight reduction , brakes and suspension imo atm.

Also is it not proven that a stage 2 exhaust loses you power on the exige ?

This may sound a little numpty, but if the ECU irons out any gains from adding a new manifold, would the same not be true for any losses by using a Stage 2 exhaust?

Better to spend money on weight reduction

Exhaust mods in general can offer very good weight savings n their own right.

I dont see any point untill a non Lotus ECU is available.
You cannot change the map in any way so any gains you might get in the 1st week might all be ironed out by the Lotus ECU. Better to spend money on weight reduction , brakes and suspension imo atm.

Also is it not proven that a stage 2 exhaust loses you power on the exige ?

This is not meent to hijack this forum in any way but I’ve been running a non learning ECU with an Xede piggy back sence 11/05 and have kept all of my HP gains…so far 270rwh and 170lbs torque…You can see all the dyno sheets on www.moremonkey.com

But you have a S/c fitted to get that Bhp

we are just talking about a manifold here.

If I wanted more HP I would go with the Forced Fed Turbo at 287 Bhp and 200ft/lbs.

But you have a S/c fitted to get that Bhp

we are just talking about a manifold here.

If I wanted more HP I would go with the Forced Fed Turbo at 287 Bhp and 200ft/lbs.

A great choice if your looking for turbo responce…I thought about it before I went SC…The point is without a no learn ECU, anything you do will be screwed by the learning Lotus setup…Ask forcefed if you doubt me…Hell what do I know…

which is my point regarding the guys post about “Thinking of replacing the exhaust manifold on the Exige”

spend the money on disks or wheels imo.

which is my point regarding the guys post about “Thinking of replacing the exhaust manifold on the Exige”

spend the money on disks or wheels imo.

The car doesn’t need disks or wheels it needs more power…In order to keep it, you first kill the learning of the ECU and then add a piggy back that will allow you to tune for cold air intakes, headers and exhaust…and get what you paid for…

so you are
A, spending [censored] loads on ecu etc
b: doing a piggy back job

just to get 5 or 10 BHp
imo thats not great value for money and not the correct way forward.

Wheels,disks/brakes and a set of two ways will make you quicker round the track than 10 Bhp that is a FACT.

You can only go the same speed round corners what ever power you have, in fact most of the guys i see with big HP seem to go slower round the corners because they have gone to fast into them/ or are having to brake to early because of the extra power.

SO what does this extra power get you ?
0.5 seconds on a straight if your lucky and slower round the corners unless you have great skill.

I still think people should spend there money on wheels, brakes and suspension before even looking at the power routes you will be 6 or 7 seconds quicker on track which imo is better than 0.5 seconds on a straight.

so you are
A, spending [censored] loads on ecu etc
b: doing a piggy back job

just to get 5 or 10 BHp
imo thats not great value for money and not the correct way forward.

Wheels,disks/brakes and a set of two ways will make you quicker round the track than 10 Bhp that is a FACT.

You can only go the same speed round corners what ever power you have, in fact most of the guys i see with big HP seem to go slower round the corners because they have gone to fast into them/ or are having to brake to early because of the extra power.

SO what does this extra power get you ?
0.5 seconds on a straight if your lucky and slower round the corners unless you have great skill.

I still think people should spend there money on wheels, brakes and suspension before even looking at the power routes you will be 6 or 7 seconds quicker on track which imo is better than 0.5 seconds on a straight.

Do what you want with your money I don’t care but when you have reached the limit of your superior driving skills with out turning your plastic fantastic into a heap on the side of the track you will need more power. The only way you can get faster times will be the addition of more power and the only way you can get it and keep it is with a proper non learning ECU and a piggy back that will allow a proper tune…Are you wearing a “flat cap”?

and the answer to my original question is…

the answer is fit what you like its your car :slight_smile:

there are 4 to choose from atm
Janspeed ( not good and cracks)
Piper (Seems ok but whats the point without a ECU change)
Forcedfed (Work of art top metal used very expensive, but still with no ECU change why fit one)
Get Jim at 2bular to make you one

I am hoping there will be ECU under �700 available in the new year and i think then I would go for a Forcedfed header if that was the route I was to choose.

ps looking at the usa sites there are about 10 other headers to choose from