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4 branch & decat gains?


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Im considering getting a 4 branch manifold made which will also get rid of the cat for an otherwise standard n/a 5efe.



Im just curious have people got a noticeable improvement from fitting them to n/a 4efe's and 5efe/5efhe's? Or better still rolling road figures before and after.



I have found no factual data for these mods to starlets.



Anyone any experiences?


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sure they do mate but they need to be mapped for it, cant just bolt it on on a NA and expect it to gain just like that

there is a zisco ramstyle for 4efe on ere for sale, that with a bigger tb and lighter fly and a remap will get you gains

the lighter fly is the best mod of all !!!!!!!!

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Get an obx mani or mod a 20v mani and downpipe to fit.

full 2" exhaust, anything more you will lose mid range power.

Throttle bodies

Advance your timing (makes a massive difference)

Fuel pressure reg to compliment the ITB's. You will need to run fairly rich down low to support the extra air up top.

6 speed gear box.

Lightened fly and clutch

Remove power steering and aircon.

Fit 5efhe cams.

I had the above minus lightened flywheel, 6 speed and cams. They where next on my list and the car was already stupid quick for a 1.3 n/a!

I beat a gt turbo running 0.8bar, all standard apart from exhaust, decat and intercooler.

Yours would be even faster being a 5e ;)

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Get an obx mani or mod a 20v mani and downpipe to fit.

full 2" exhaust, anything more you will lose mid range power.

Throttle bodies

Advance your timing (makes a massive difference)

Fuel pressure reg to compliment the ITB's. You will need to run fairly rich down low to support the extra air up top.

6 speed gear box.

Lightened fly and clutch

Remove power steering and aircon.

Fit 5efhe cams.

I had the above minus lightened flywheel, 6 speed and cams. They where next on my list and the car was already stupid quick for a 1.3 n/a!

I beat a gt turbo running 0.8bar, all standard apart from exhaust, decat and intercooler.

Yours would be even faster being a 5e ;)

really? Gt turbo would be at least 130bhp with those mods and wouldn't expect the N/A to be even close to that

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