Race system - Supersprint- the truth

7th May 2008, 11:46

Are these actually any good

I always loved the one on my mates car full system but had a silencer in the middle and made good power

What's the race system like in compassion, less torque with it being a straight through system?

7th May 2008, 12:34

just a straight through mild steel pip and a back box

cituning sell the centre for 40 plus VAT (47 quid)

ive got a magnex to fit to my centre as i dont like the back box

7th May 2008, 12:40

Performance wise they any good?

7th May 2008, 12:42

not had anyone ran one on a rr here

i take it they are standard bore size centres? my straight through pooflow gained me 4.8bhp when on northampton rollers and the only diff is the 24536534inch back box on my car

7th May 2008, 12:43

See am thinking straight through works well on a turbo car

but no very well on a N/A

Someone must run one on a vts lol

7th May 2008, 12:47

well the straight through works well on mine but thats still got cat and standard fannymould

i wouldnt get a straight through if i was decatting tbh

7th May 2008, 12:53

And am sure the Race sytem back box only connects to the race middle pipe with it being 50 mm

7th May 2008, 13:13

I ran the race one on my VTR for a bit with the piper oval backbox.

It did release more top end but tbh any other difference was negligable (then again I'm running standard everything else).

Oh, and the sound on the motorway made my ears bleed.......hence why the CAT is now back in

7th May 2008, 13:17

i got mine on yesterday (cat back and my cats under the car) so its not the race pipe but the shorter of the two sounds very nice!

its not properly worn in yet tho

as for performance didnt notice any increase but then 1 or 2 bhp will be very hard to notice

7th May 2008, 13:21

So does anyone know if the Race system back box fit all the other Supersprint middle sections?

7th May 2008, 13:22

Quote:

Originally Posted by furio-james

i got mine on yesterday (cat back and my cats under the car) so its not the race pipe but the shorter of the two sounds very nice!

its not properly worn in yet tho

as for performance didnt notice any increase but then 1 or 2 bhp will be very hard to notice

mines the same, cat back centre with race rear box. The centre does away with the middle box as the cat is effectivly a 3rd box anyway. The thing pops and bangs all the time. As for power increase? didnt really notice it until i fitted the 4 branch when all the jigsaw peices seemed to click together and it flew.

7th May 2008, 13:23

Used to have this on my old VTS, didnt make much difference at all...
I dont think?
Just SHED loads of nice noises.

7th May 2008, 13:37

straight stru work fine on my VTS, quiet as the stock
one but no exhaust restrict, and in-expensive

7th May 2008, 13:41

so a straight through pipe was quiet!!!!!

7th May 2008, 13:54

yes, just used the right pipe size & proper resonator.

even more, the stock and after market are all compromise
with the chassis, you can custom to let the exhaust flow
more smooth than any mass production one.

7th May 2008, 14:07

You are correct in saying that some straight through systems do lose torque, due to less back pressure.

For out and out power a twin box system is your best bet mate. Such as an ahsley, magnex or janspeed system.

7th May 2008, 14:15

My thoughts exactly

7th May 2008, 14:47

believe back pressure make more torque just like believe the
earth are square... u can go to any dyno and proof.

as i says there are only 2 magic words in exhaust systems,
proper pipe size & resonator, there will let you quiet & quick.

9th May 2008, 13:35

And i presume a Scorpion Exhaust from a VTR would fit to

9th May 2008, 13:37

Go with Ashley imo.
you always rave about them bud.....

9th May 2008, 13:47

Point

Will speak to Craig

9th May 2008, 13:52

Why are you even asking the question?!!!

Ashley will be good on your low power vts, mine will require a single box effort to release all those ponkeys

9th May 2008, 13:55

Quote:

Ashley will be good on your low power vts, mine will require a single box effort to release all those ponkeys

Waste of time Craig, even if it is lighter

The one you want is a race system designed to give better top end

Still think your crackers for getting rid of the Ashley

9th May 2008, 19:18

i just binned my ashley for a supersprint

9th May 2008, 22:11

Quote:

Originally Posted by Sparco_Tom

i just binned my ashley for a supersprint

And...?

9th May 2008, 22:13

nothing to report yet havent driven the car no tax or insurance at the mo

9th May 2008, 22:18

straight through + boost = no problems

9th May 2008, 22:29

i got my supersprint on vtr 2 weeks ago n i noticed a difference, got a 4-2-1 mani supersprint race centre and supersprint back box, bit of a change from standard but i wouldnt change it, sounds too nice and felt a small power gain

11th May 2008, 08:00

ive got a race only on my vts with a janspeed back box but standard manifold, so far i dont think its made it any quicker all it has done has annoyed everyone done my road and my m8s on the way to southend as its so raspy. Im in two minds atm whether i like it or hate it. Hopefully have my car on RR soon so will see if made any difference

Finch

11th May 2008, 09:37

when you connect some none standard hardware to your PC system,
you should install the specific driver to let it work, right?

why you think not the same as the vehicle modification? the fuel/
ignition timing need to come with your modified, or it is possible
slower than stock one but well tuned.

11th May 2008, 10:38

ill say there was a difference in mine in noise with the supersprint and a piper box but due to my fuelling being arse about face (damn stepper motors) i cant really comment on the power gains (did seem to have a bit more pull but only really noticeable in mid revs)
sounds ace though haha

since fitted my mani too and makes it a bit raspier but it still grumbles at low revs
and the fueling is better makes a bigger difference
but the best for noticable power is the cams (just need a remap)
wouldnt really recomend a piper if you do lots of motorway miles though they are quite loud

11th May 2008, 12:52

well i have the cat in mine and run a piper back box, car rev's alot more freely compared to teh magnex i had! but as you heard its loud

raspy when cold but nice sporty noise when warmed.

Richie has the full supersprint with no cat sounds emense is fairly loud not as loud as mine and can feel the difference tbh

14th May 2008, 18:58

regardless of bhp increases, i think its pretty lightweight as well. every bit helps

14th May 2008, 21:18

yer must admit weighs a fair bit lighter than the pipe i took off with the mid silencer and cat

Finch

14th May 2008, 23:35

Quote:

Originally Posted by Coonper

You are correct in saying that some straight through systems do lose torque, due to less back pressure.

I'm going to throw in another theory just to add something to the thinking pot

Could it be argued that much of the tuning of the exhaust gasses is done in the manifold design. Performance exhausts perhaps don't gain you extra power.. they just reduce the loses caused by the silencing used in the o/e setup

Consider this one for design.. is backpressure not needed? An open system could be the most efficient with no restrictions, even pulses, good length and the right gas flow. Anything after that robs power. The downsides.. the noise!

14th May 2008, 23:38

wow lol kam what car is that, but does it not really apply to much to turbo cars? and im guessing thats turbo'd even thow i cant see a turbo

Finch

14th May 2008, 23:51

Quote:

Originally Posted by FinchysSaxo

wow lol kam what car is that, but does it not really apply to much to turbo cars? and im guessing thats turbo'd even thow i cant see a turbo

Finch

looks like an F1 v8 may not be f1,but looks it,
defo a V8 N/A,not turbo,no turbo pipes at manifold.

its a renault f1 v8

14th May 2008, 23:51

renault F1 car.. R25 or something like that.. I forget where I got the pic from

Most definately N/a

14th May 2008, 23:53

yer was guna say the manifold is straight on the engine. yer i agree with you it dosnt always apply

Finch

14th May 2008, 23:53

i got it,i got it,

iam so happy

hahaha

doo bee doo i wanna be like you hoho walk like you talk like,you.
iam sooo clever hahaha
nice post kam

14th May 2008, 23:55

Quote:

Originally Posted by KamRacing

renault F1 car.. R25 or something like that.. I forget where I got the pic from

Most definately N/a

hahah i knew it was a renault lol.
R25 is what alonso won in i think,which was the V10 days.
maybe later one like last year or this year me thinks.

15th May 2008, 00:05

kam,you cant compare one engine from one class to another,wether it be it rally vs f1,bikes vs drag cars.
different reg stipulate different techical limits.
the reason an F1 engine revs so high is because the fia reg on body design engine limits etc,and the only way they can get power is to rev.
so they design there engines with top end power,probably from 15,000-18-19,000rpm.
i never seen them exit a corner lower then 15000.
rally cars on the other hand,prob rev to only around 7-7,500?
but they produce all there power down below.
exhaust tuning isnt so much about back pressure but its to do with scavanging on N/A.
to get the correct length,diameter,baffles etc,for maximum scavaging,different lenths,diameter effect this.
scavanging is caused by harmonics travelling up and down the zorst.
if you get the harmonic to leave at the header just as exhaust valve closing it will 'drag' some of the shit out the cylinder,clearing it for the next fuel/air mixture and not contaminating it as much.
that is also why valve timing is so important as well,to aid in that.

15th May 2008, 03:08

straight stru always the king, no matter NA or forced,
F1 or hatchback, It's already a iron rule no need to
discuss.

but the F1's exhaust design are not like our daily drive
, they don't care the noise & lasting, just push it to
limit, street exhaust system still need a "normal"
straight pipe+resonator to reduce the noise and buffer
it.