Best exhaust for M20B25 1992?

[Andy325i]

What exhausts (S/S of course) gives the best gains powerwise for the M20B25?

Does anyone know if milltek make one for the above? (can't see it on their website)

Is this a good price?

http://cgi.ebay.co.uk/SCORPION-Full-Sys ... dZViewItem

Many thanks

Andy

[Ant]

Oe is "the best" thers a few HP to be gained from the zaust but TBH I'd prefer a good fitting item over anything else.

The tonal quality of stainless is a little tinnier( is that a word ?? ) than the OE mild but still

how loud would you want it ?

Scorpion fit great , as does the sebring , avoid the Mongoose, it fits terrible

Evolve have a few options listed on their site, might be worth a browse...

[elebub]

Andy325i

PM'd you re E34 bits

Andy

[aceraf]

That's a good price, but it's not a complete system though is it? I thought the scorpion full system had the opion of downpipe aswell, so that would be a complete system!

Also, does de-catting these car's make much impact on performance??? I've had past experience of cars responding very well to de-cats (obviously a friendly MOT station would be required).

[Brianmoooore]

Also, does de-catting these car's make much impact on performance??? I've had past experience of cars responding very well to de-cats (obviously a friendly MOT station would be required).

I think the main improvement is in fuel consumption rather than power. Can't be many UK 325s that are required to have cats.

[wildeian]

I have an Ernst Sports exhaust on my Touring.

It's nice and subtle around town, but has a nice roar when you floor it!

[aceraf]

Also, does de-catting these car's make much impact on performance??? I've had past experience of cars responding very well to de-cats (obviously a friendly MOT station would be required).

I think the main improvement is in fuel consumption rather than power. Can't be many UK 325s that are required to have cats.

Mine is a 1988, can i get away with it?

[StuBeeDoo]

Mine is a 1988, can i get away with it?

Has it definitely got a cat then??

[aceraf]

Mine is a 1988, can i get away with it?

Has it definitely got a cat then??

never checked!

will check and report back

[StuBeeDoo]

Mine is a 1988, can i get away with it?

Has it definitely got a cat then??

never checked!

will check and report back

TBH, I'd be very surprised on a 1988 UK spec. car.

[AlpineAde]

The difference in power between a 325i with a cat and one without is 1 bhp.

At least that is what it says in my owners manual.

[Brianmoooore]

Aceraf - Your car is cat prepared, but highly unlikely to have one if it's a UK car.
Feel under the front battery tray for a socket that's clipped to the underside. If there's a plug connected into this with a wire going on, then you have a lambda sensor, and should have a cat.
Just a blanking cap, and you don't have a cat.

[aceraf]

Aceraf - Your car is cat prepared, but highly unlikely to have one if it's a UK car.
Feel under the front battery tray for a socket that's clipped to the underside. If there's a plug connected into this with a wire going on, then you have a lambda sensor, and should have a cat.
Just a blanking cap, and you don't have a cat.

thanks, will have a look.

[BMracing]

Any vehicle before September 1992 (up to and including J plate) does not legally require a cat, even if it has one fitted.

[aceraf]

Any vehicle before September 1992 (up to and including J plate) does not legally require a cat, even if it has one fitted.

Thought it was something like that.

[Andy325i]

Oe is "the best" thers a few HP to be gained from the zaust but TBH I'd prefer a good fitting item over anything else.

The tonal quality of stainless is a little tinnier( is that a word ?? ) than the OE mild but still

how loud would you want it ?

Thanx for the input Ant, the current exhaust is a Jetex system (non S/S) and has been on there about 14 years and getting very due for replacement I really don't want to go back to O.E. for longitivity reasons.

As for noise , I had a scorpion half system on my old 325i and had the center box removed when it started to rattle. This was virtually the same on idle as before, but got nice and throaty when given a good amount of right foot, without being ott

Andy

[Brianmoooore]

The life of an OE E30 exhaust system is normally around 14 years or so. There are plenty of E30s around still with the exhaust they left the factory with!

[Andy325i]

Good point, but I wouldn't have a case if I went back to the dealer after 3 or 4 years if there was a problem and I imagine it would be simular in cost to a S/S system and iirc most have a lifetime guaranty If I have anything to do with it I will still have the car in 14 years

Andy

[Cabrio]

some good stainless items are available and should last even longer and look better if include with manifold etc....E30 centre have a great system...not cheap but depends if plan to keep car etc

[Brianmoooore]

You'll probably find that the 'lifetime warranty' requires annual inspections to be made (at your expense), and has so many get out clauses as to be worthless.

[aceraf]

be careful what grade os SS it is aswell...i've had zausts done in the past that use the lowest grade SS they can get away with!

[Cabrio]

Best grade is T304 thats what E30Centre have on theres and no checks required and no charges to check if asked for...so just need to compare prices etc...if made correctly and not silly money cant understand concerns really

[Andy325i]

Cheers What is this E30 center you talk of?

Andy

[Cabrio]

They are in Wolverhampton just off J9 M6...specialise in all things E30...break them and build race cars...owners are brothers and close friends of Nigel Moseley

[Andy325i]

and they build S/S from scrach I am guessing?

Do you have any contact details for them?

Many thanks

Andy

[Cabrio]

They have them manufactured yes...they have agreed the deal with me but if want other stuff will be happy to forward you details...sure they are listed on hear by other people...send me pm