Cleaning the exhaust manifold

[jamjar1383]

box circled in red cut off and weld a stright pipe back in place

[FarmerPug]

sounds easy. who has done it so we know what affect it has.

[plod]

I de-cat'd mine at the same time as fitting the powerflow, so can't give a valued opinion on just the de-cat
However, the turbo spools up a lot faster
Might give the de-egr a whirl as well - did think about it previous, but was told I had enough grunt out my hdi as it was

[FarmerPug]

about the decat
do i need to cut it out, or can i beat the centre of it out?
Im not that good at welding.

[FarmerPug]

The stuff arrived today in a small envelope:

thats it.
well these instructions came:


Im confused by this picture, is this round the back of the engine?

[jamjar1383]

this is the egr system u need to blank off with the kit u bought

[FarmerPug]

But i thought this was for coolant or heating the cabin?
But if thats all it shouldnt be too hard.
does this need any instant gasket sealant stuff round it?

[jamjar1383]

But i thought this was for coolant or heating the cabin?
But if thats all it shouldnt be too hard.
does this need any instant gasket sealant stuff round it?

its worth sealing anyway, u wont be able to remove it if its got water pipe's going through it likr the one in the pic just un bolt it and put the plate in and bolt it back on.

[FarmerPug]

i see so the water is circulating round in there but isolated from the exhaust system?
Is sealing necessary then if it doesnt come up.

[FarmerPug]

I thought to myself i could do this de egr job so i did it today. There was gaskets there so it should be sealed properly. only the bottom allen key holding the egr brakcet on isnt in because i couldnt get it in but its not a big issue.
But its a doable job but blood will flow from your hand, i have 3 cuts and a load of scrapes on my hands and arms.
Anyhow low down the car feels a bit more free, it revs easier now. A difference but not a wahey woweey difference for that i discovered that just about an hour ago. In 5th gear i was doing 60, before if you put your foot down it slowly responded, but now you would swear the car is in 4th. Mid range torque has definatley went up.

Now for the decat.

[jamjar1383]

de cat will make more differnce again, u should see an increese in mpg to.

[FarmerPug]

Jamjar do you know the bolt im on about?

i couldnt get this one back in, but it all still feels tight. Will it do any harm?

About the decat, what diameter of steel tubing do i need?
Will the mot centre not want to see a cat?

Will mpg be better with the egr not cursing the car.

[jamjar1383]

re the bolt id try to get it back in if u can u probs just need to line it up.

as for the mpg it has been known that removing the egr can give a very small increese in mpg but not a huge amount, the decat u will see the most differnce as the engine doesnt have to work as hard to pull u along because the cat isnt there restricting the flow.

as said before mot centres dont do emmisions on a derv just a smoke test so an long as the stright pipe isnt blowing and the car isnt smoking like like a tank then u'll be ok

[FarmerPug]

is there any pipes on ebay that will do the job. Id have to get it welded if i was to make it as im not good enough at welding.

[jamjar1383]

is there any pipes on ebay that will do the job. Id have to get it welded if i was to make it as im not good enough at welding.

well longlife qouted me £80 so id say u caould fina cheap garage just to cut it off and weld a pip in its place, i dont even know what size the pipe is havnt done mine yet waiting on parts to arrive then gonna do it all in 1 or 3 days