New to RX7\'s little question.

[A7NTY]

Oh yes I forgot that, they have longer seat runners.

[allstaruk]

They are slightly down on power cause they have a a pre-cat and are mapped for UK fuel as a standard.

A

[Mrs Copie]

Are the seat runners longer due to the lack of rear seats? I know that makes me sound really stupid, but i was just wondering if that was the reason, or if there was another reason for it

[A7NTY]

Yes thats right.

[Adriansturgess]

Think it\'s already been said, but UK cars were quoted at 237bhp Jap imports at 255bhp. No doubt power difference due to the extra cat and because mapped to lower octane UK fuel.

[Iain C]

i have a uk car too.
I prefer the jap spec rear bumper ..its less cluttered.!
I think us uk owners get a raw deal...lower power, heavier.
That said they are rare so its not all bad

[probedb]

Forgot to say welcome Not many UK ones around so it\'s always good to see another!

[copie]

I\'ve got to say a big thanks to everybody, for all your help, i fill a lot more clued up about this now, i\'ve seen on e-bay already the de-cat pipe and down pipe, so might have to invest in these after the mot to give me some more power. I must say the RX7 is so much fun, im a MR2 person ussually but mines just got to dodgy on the road, and using it on the track only. So getting this RX7 is great. Keeping me in the jap RWD catorgorie.

[allstaruk]

The de-cat and downpipes you see on ebay are normally from the states, they WILL NOT fit a UK/Jap car they don\'t clear the stearing rack.

Al

[copie]

Are thats handy to know, thanks

[allstaruk]

De-cats are normally floating round the for sale section just keep you eyes open and in my opinion the downpipe\'s not really worth changing on the twins.

Al

[ScuttleRX]

downpipe\'s not really worth changing on the twins.

Al

Hmm, you can normally get them for a fair price so worth doing I reckon, especially if theres a cat in the standard one...

Can see your point though regarding twins just think theres some power to be gained still

[allstaruk]

Hmm, you can normally get them for a fair price so worth doing I reckon, especially if theres a cat in the standard one...

Can see your point though regarding twins just think theres some power to be gained still

Opps yes if your getting a UK car definately change the down pipe but I\'d prob only swap if for a JDM one.

Scuttle do you have any figures to back up the power gains from a down pipe so far i haven\'t seen any a decat and cat back will increase power but the JDM downpipe is pretty much up to the job of the twins.

Al

[ScuttleRX]

No I havent got any figures matey, just going by what it felt like when I had the downpipe changed (before I had mid pipe in). Might have been just cos it sounded better, more grunty
I think down pipe and de-cat together might make a difference, sort of complement one another.

I would have liked to test things like that each time I put something new on but never had time to dyno or things went on in groups.

On a side note there was a bit of weight saving, jdm one weighed quite a bit more than R-magic one, and the main cat weighed about 10 tonnes more than the mid pipe

[allstaruk]

No problem mate, just interested was having a conversation with one of the welknown big power rotary boys at the weekend and he told me the stock JDM one was more than adequate for anyting the twins could throw at it, as far as I\'m aware SDminus who currently holds the 1/4 mile record on twins is still using the stock item.

Al