Hi guys/ girls

Looking into the supersprint exhaust system, for my Seicento SPI 1108cc year 2000 sporting model.

I think ive read on here somewhere that the section that contains the race cat for the seicento is no good because it does not use the original flexi pipe. Is this a big problem, do i need the flexi pipe? i would prefere to keep it. I believe the car will be running about 80bhp once remapped.

Im only looking at the manifold and a suitable centre section + cat which will mate to the standard back-box for the time being that will pass an MOT.

All the parts can be found on this website.
http://www.motorsportworld.co.uk/
If you search by car, enter fiat, seicento, 2000, and go to the exhausts section and theres all the parts that i have mentioned above if i havent really made it clear.

I think there was another pipe that was suitable but, it wasnt specified if the pipe had a cat and i need a cat. Or are there more sections and this pipe leaves the original cat and joins further up. (I believe at this point im getting confused lol.)

Also ive heard that using a supersprint exhaust on a seicento does not quite match to the standard cat otherwise i would probably just use the original cat.

Thanks for reading this extreemly long post.

Many thanks

Matt

Sporty_5_Seicento said:

do i need the flexi pipe?

Click to expand...

Yes you do,well i certainly recomend them.if your getting a manifold then i think they can crack if used with out a flexi.

Also if your engine mounts go.Just look at how much flex you get. my mounts have gone and its ripped all the hangers off the pipe and the flexi is blowing

Yeah ok thought so much,

But this doesnt really answer my question, between the Superspirnt manifold and the supersprint cat section can i run my flexi pipe bit? or do i need another section made by another manufacturer to still run the flexi pipe?

I know the reason for the flexi pipe hence why i put my car will most probably be running 80bhp and therefore more movement at engine mounts hence more likely to crack the manifold.

Thank you for your reply brook, Do you know the answer to my further question?

Many thanks
Matt

I think the SuperSprint manifold replaces the flexy section with a sprung joint, however my V70 cracked the exhaust with a sprung joint so I'f say you'll need to get a flexy in there somewhere. Looking at the images on the SS site I'd think about getting a custom mid-section with a flexy welded to the flange.

I also recommend the flexy....but you are buying the SS sports cat??!!! Thats loads of ££, if your getting a flexy fitted in somehow, just buy a generic sport cat and the SS rear section and have the mid custom made.


Also what have you done to get 80bhp? N/A thats quite a big jump, or have you turbo'd?

Kristian


//edit igonre the SS cat comment, they don't do one lol. I was confused with the punto ones.

http://www.motorsportworld.co.uk/ seemed a great price when i got the manifold

Ok, so far the mods are only:

40mm Tb
GSR induction

However my head gaskets just gone and over the last few months ive been collecting parts to fit once my exams are finished which finish on the 23rd of May (Doing naffy International Baccaulaureat if thats spelt right).

Ok I have a lightened flywheel in my bedroom 2.2kg off standard
Punto 75 cams (886)
As im doing the HG im gonna skim and port, my dad can mill and port.
Match Inlet ports / possibly convert to MPi depending.
Obviously supersprint Manifold (still dont know what other parts i need)
Vernier Pulley to re-time,

Then remap by a cousin of a mate for £100 quid. If its any good i will let you lot know. I think he may let people from ff have discounts i think the 100 quid is because i know his cousin but there should be a bit of discount. (Normally £250) obviously depends on how good it is.

Ok, back to the question, Would this fit together,
Supersprint manifold

Existing Seicento Cat (keeping flexipipe)

one of these to remove the box(if thats correct from another thread)
http://www.topauto.com/en/detail.pl...cs=223;pa=1;pi=161;fs=true;cs00=223;cs01=Fiat

Then my standard back box ( will change this once i get the new
back box )


Also will be uprating the clutch to ebc and running ebc greenstuff pads.
Dunno what bhp do you recon them mods will archieve.

Many Thanks for your help, Good to hear youve got your car running Kritip.

Matt

If going mpi, remember the inlet is plastic so matching will be a pita, unless you get another inlet that's not from a sei and is metal.

When skimming, increased CR will be nice, just keep to the max lines else you'll end up with interference if the belt goes.

Flywheel is nice, but never gives more power, just increased throttle sensitivity etc. it will give 0hp as far as i know.

The cam is a nice addition and will give a bit more power and low down torque

You reckon you'll need a vernier pulley with a skim to the max line? not so sure tbh, but as long as its transferable, it can be used for ages to come.

Is the remap on the rollers or just a new mapped file? If its just a mapped file, can get it a lot cheaper even DIY. If its on rollers, you got a bargain!! :slayer:

The GSR and TB are proven nad very nice


Back on topic:


I think the logic on your exhaust seems ok. I have never messed with spi exhausts, but SS manifold -> cat -> topgear pipe -> BB seems fine.


Have you not considered ditching the cat until MOT time?


Altogether, its very hard to guess power but i think you goals are a bit high imho, more like 65-70 bhp, but i don't know much tbh


Good luck anyway and stick some piccies up

Kristian

//edit - looks like my word of the week is nice! Sorry for its over use

The exhaust middle section from topauto is about 1mm smaller bore than the supersprint so needs to be adapted to fit.

Cheers for the replies,

Yeah i should be able to adapt the Exhaust no probs, Thanks for your replies.

Once ive finished it and put it on the rollers i will post up the progress and bhp figures. Your probably right that it will only gain about 65-70 although i can always hope. lol.

Many thanks again for all of your replies.

Matt

i guessing alot of the power depends on how far you go with the head.

just a little question...when remapping does this change the info within the chip?? as a chip would go niocely with that lot but im not sure weather remapping changes the chip and if there would be any point.

Yeah thats what i was thinking, deepending when i can get it booked in for the remap i was really considering ordering the mkcritch chip.

Allenhelen and Arc both rate highly the mkcritch chip and they would of had similar mods to what im going to have.

I believe i have the phase 2 ecu which will only allow the car to rev to 6500 rpm and then hit the limiter where-as my mates cinq used to reach 7100 rpm and then hit the limiter. I think Micheal said he can raise the limiter to 7100 rpm or even get rid of it.

Obviously aint gonna get rid of it, but will defo look into getting it raised to 7100 rpm if its possible.

Dont worry, i dont dirve my car hard, and always let it warm up before going anywhere near these revs (theres actually no point going that high at the momnent as the power is developed alot lower down the rev range).

Ive also read something on this forum which supports the difference in revs between the older Cinq SPI and the newer Seicento SPI with the phase two ecu.

Thanks for everyone thats contibuted to this thread, you guys give me soo much help and make things possible that were not before. Once its all been done ill uploads some pics in a new thread and well see what bhp she makes.

Matt

For an MPI conversion imo a Punto 75 head and manifold are both 'must have' items