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Downpipe fitted, 364 bhp!!

micky 32

Full Member
Oct 30, 2003
630
0
Longford, Ireland
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Weird - I recall the cams in the K04 cars to be the same - and different to those in a K03s car. I can and will check though to make sure I am not losing my marbles! I also specifically remember speaking to Kev and him saying that it was the cams that made the difference.

Do you have any reference points for VXR's/ST's on JKM's rollers or your car on other rollers?

They might be the same, there are a few debates going on over the net regarding differences within the 2.0T. Some say the Cupra and ED30 are the same engine as the S3 and others say it's not that the S3 is a lot stronger and with tighter tolerances with the pistons etc.. All i know is i have KO3 cams and it can keep up with a manual KO$ stage 2+ and give same results on the same dyno.
 

robjnr

258 spanish donkeys
Oct 24, 2007
410
0
Bristol
Ken I'll be down early and probs be stayin for the whole day as I'm nearly last on the list, Its good to watch the cars,
 

Poverty

Guest
Have you changed the camshafts as well? Revos TT does not make the figures their Cupra does, and they put that down to the camshafts being different in the K04 car. I believe the difference is to the tune of 15-20bhp. If not, you probably would be closer to 340bhp than 360bhp ;). Have you had your car tested on a r/r other than JKM's out of interest?

Regarding JKM's rollers, it is bizarre that they seem to have different results from every other r/r. I would be intersted to know the numbers Astra VXR's and Focus ST's make on their rollers in stock/modified states of tune as a comparison.

backdraft k03s to k04 conversions also make less than the oem k04 stage 2 plus cars....

Cupraken, if me and the gang are ever heading that direction will drop you a pm ;)
 

DanGB

Who need's a Diesel....
Feb 12, 2006
3,772
2
London
backdraft k03s to k04 conversions also make less than the oem k04 stage 2 plus cars....

Cupraken, if me and the gang are ever heading that direction will drop you a pm ;)

Im sure the compression ratio is different on all the K04 based cars... The S3 and Cupra pistons appear to be the same part.
 

micky 32

Full Member
Oct 30, 2003
630
0
Longford, Ireland
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As i said in a previous post, my vRS has no problem keeping with a mates Cupra stage 2+ and driving them back to back they both feel the same. It's just that as mine dynoed the same bhp 324bhp as a ED30 stage 2+ on the same dyno and my mates Cupra supposed to be 360bhp+( with my car being as fast on the road) just makes me wonder a little. I wasn't trying to upset anyone on here, only a healthy debate...

The TT did a 12.98, 113mph time. Does the cupra stage 2+ do much better?
 

Poverty

Guest
the fwd k04 cars are faster down the strip than the k04 haldex cars ;)

Dont know of any cupras in the 12's, but quite a few ed30s
 

Cupraken

Southwest Stealth
Apr 10, 2009
318
0
Street, Somerset
On the rollers again at the TSR r/r day today, this time got it strapped right 1st time, 368hp/343ft/lb, don't think dyno's out much, two std cupra's both made around 260hp/230ftlb, other cars were spot-on or slightly under what they were expecting (nothing new there!) Don't underestimate the flow of the ITG kit, I really think it contributes a lot to the figs, has anyone else dyno'd one?
 

R1ch85

1/4mile - 13.935 @ 100.54
Nov 9, 2006
1,675
0
Bristol
Oh great my car must be making 360bhp + then:rolleyes:. The reason i think JKM's rollers are accurate is because standard cars give bang on what they are supposed to be... But if you like to dream be my guest:) The TFSI is a torqey engine for a petrol so will give it a good start. If the road was a lot longer the RS4 would have gotten by vtecabusers car i would bet.

My Mk4 Ibiza Cupra 20VT (factory 180bhp) made 179.8bhp on TSR's rollers as a standard car... That seems fairly accurate to me.

My car has since had some work done, and has been on both JKM and TSR's rollers in the same state of tune.

JKM showed 256bhp, 255ftlb
TSR showed 253bhp, 263ftlb.

Hardly a million miles apart are they? More than likely the conditions on the day.

Also, while I'm in this neck of the forum woods, yours is an awesome Cupra Ken, a real beast! Hope you get the flat sorted soon! ;)
 

Cupraken

Southwest Stealth
Apr 10, 2009
318
0
Street, Somerset
Cheers guys, can't believe I had to do the run with a pram wheel on, had to be the side you were all looking at! Could've been worse, front wheel would've been interesting! Tyre's history, hole in sidewall, no idea how........
 

R1ch85

1/4mile - 13.935 @ 100.54
Nov 9, 2006
1,675
0
Bristol
Cheers guys, can't believe I had to do the run with a pram wheel on, had to be the side you were all looking at! Could've been worse, front wheel would've been interesting! Tyre's history, hole in sidewall, no idea how........

Of course, if it had been the front, I'm sure you would have swapped a rear to the front for a RR run lol :p
 

ZBOYD

Looking up at the stars!
May 19, 2001
9,468
15
Cheshire
www.seatcupra.net
Huge transmission loss on that graph, seems to be an odd calculation for a FWD car?

What were the transmission losses on the standard cars, because even if they are running a lot less power they should lose a similar amount of power at the wheels to the tuned car.

So if the equation is the same they would be calculated at around 200hp at the wheels?? Any graphs of standard cars?
 

Poverty

Guest
On the rollers again at the TSR r/r day today, this time got it strapped right 1st time, 368hp/343ft/lb, don't think dyno's out much, two std cupra's both made around 260hp/230ftlb, other cars were spot-on or slightly under what they were expecting (nothing new there!) Don't underestimate the flow of the ITG kit, I really think it contributes a lot to the figs, has anyone else dyno'd one?

mine will be getting done next weekend, so will let you know how it goes.
 

Cupraken

Southwest Stealth
Apr 10, 2009
318
0
Street, Somerset
I think they were the same as mine on stage 1, around 45hp drag, with more power they have to really strap it down tight in the rollers to keep it from spinning/jumping, this creates extra drag. The standard cars didn't need pulling down on the front towing eye but mine does........ Some of the lower hp cars were hardly pulled down at all, just restrained
 

Cupraken

Southwest Stealth
Apr 10, 2009
318
0
Street, Somerset
Probably on a R/R like JKM's with a knurled roller and the fact the whole dyno is elevated so the car can be pulled down more directly (the TSR dyno is a flat bed type) then there would be less drag so the wheel hp and engine hp would be closer.....The car has to be pulled down real tight at TSR cos the rollers are smooth
 
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