All Things Mk5 > Performance Modifications
whats the best air intake?
acespizee:
--- Quote from: bacillus on May 11, 2010, 10:21:54 pm ---I find it puzzling why your peak torque appears to occur at around 4.4k rpm on a k03. I would expect this with a bigger turbo and not a k03. :confused:
My peak torque occurs at around 3.2k rpm with a stage 2+ revo map allbeit with higher numbers than your results.
--- End quote ---
I dont know why my torque peak is so high, i am Revo stg2+ aswell. I have never understood why some people make more torque than me. Car starts to shift at about 2200 rpm. According to boost gauge i get full boost around 2500 rpm. low-end seems really healthy on the road. I guess my car likes power more than torque. Still enougth to come on boost quicker and take down sub-360 bhp Evo's. :happy2:
bacillus:
I wonder if you ever logged your requested and actual lambda with vcds as, IMO, after looking at the AFR on your printout, you should probably run your fuelling a tad richer i.e. use F8 instead of F9.
My understanding is that the RR AFR tends to be slightly leaner than when logged using vcds.
acespizee:
--- Quote from: john_o on May 12, 2010, 08:14:08 am ---@acespizee : thats some intake thanks for sharing , well done :happy2:.
In terms of 'smooth' curves though thats just how the software is set, easily manipulated, the graphs from various tuners vary widely in the smoothing applied (as do power readouts lol).
however the numbers seem very healthy. Have you been on any other dynos
@everyoneelse : whilst I would agree water intake is a potential problem on low flung intakes, its worth considering that this may be reduced significantly on any 'twin' design.
I may be corrected here, but on a
1 : single design if you block the intake (with water) theres no option but for it to hoover the H20 into the bores :surprised:
2 : twin design , the lower intake may 'block' and attempt to suck but never get very high
(it takes a lot of vaccum to raise water x inches) , whilst the upper intake is still open.
you need a closed system to have a real detrimental effect.
I would liken it to trying to drink some diet coke from a glass using a Y piece with only one of the 'twin' side in the glass.....
makes sense to me but Im no expert!?!
--- End quote ---
Thanks mate, I usually take the car to TSR in bridgewater. The car produced 203 bhp and 212 tq stock. With just Revo stg2+, Dbilas, S3 I/C, SFS hoses, Forge DV, 3" ATP decat D/P to stock cat-back, Neuspeed pulley and HPFP the car made 280 bhp and 290 tq on there MAHA Dyno.
I then took the car to circuit motors by Castle Combe for a dyno day with some friends from my car club Performance Bristol. The car produced 279 bhp and 289 tq on the Dastek Dyno, leading me to beleive it to be very accurate. I also had a sligt boost leak as i was only getting 18 psi.
Next added Forge I/C to S3, Milltek cat-back to my ATP D/P, Custom intake, RS4 Valve, PCV to exhaust, fixed boost leak and i now have 308 bhp and 307 tq on the same Dastek Dyno. :jumping:
I will post up:
I had more torque low-down before but, the extra more than compensates. :party: :party: :party:
acespizee:
--- Quote from: bacillus on May 12, 2010, 10:13:43 am ---I wonder if you ever logged your requested and actual lambda with vcds as, IMO, after looking at the AFR on your printout, you should probably run your fuelling a tad richer i.e. use F8 instead of F9.
My understanding is that the RR AFR tends to be slightly leaner than when logged using vcds.
--- End quote ---
I heard VCDS aint accurate for lambda on the Vortex. I hear you on the lean runninig as the dyno operator pointed this out to me aswell. I have been running fuel setting 8 since, i have not logged to check yet tho.
I may even start running fuel 7 but will log first, thanks for pointing that out tho mate. :happy2:
Sunglasses Ron:
--- Quote from: acespizee on May 12, 2010, 10:18:14 am ---
--- Quote from: john_o on May 12, 2010, 08:14:08 am ---@acespizee : thats some intake thanks for sharing , well done :happy2:.
In terms of 'smooth' curves though thats just how the software is set, easily manipulated, the graphs from various tuners vary widely in the smoothing applied (as do power readouts lol).
however the numbers seem very healthy. Have you been on any other dynos
@everyoneelse : whilst I would agree water intake is a potential problem on low flung intakes, its worth considering that this may be reduced significantly on any 'twin' design.
I may be corrected here, but on a
1 : single design if you block the intake (with water) theres no option but for it to hoover the H20 into the bores :surprised:
2 : twin design , the lower intake may 'block' and attempt to suck but never get very high
(it takes a lot of vaccum to raise water x inches) , whilst the upper intake is still open.
you need a closed system to have a real detrimental effect.
I would liken it to trying to drink some diet coke from a glass using a Y piece with only one of the 'twin' side in the glass.....
makes sense to me but Im no expert!?!
--- End quote ---
Thanks mate, I usually take the car to TSR in bridgewater. The car produced 203 bhp and 212 tq stock. With just Revo stg2+, Dbilas, S3 I/C, SFS hoses, Forge DV, 3" ATP decat D/P to stock cat-back, Neuspeed pulley and HPFP the car made 280 bhp and 290 tq on there MAHA Dyno.
I then took the car to circuit motors by Castle Combe for a dyno day with some friends from my car club Performance Bristol. The car produced 279 bhp and 289 tq on the Dastek Dyno, leading me to beleive it to be very accurate. I also had a sligt boost leak as i was only getting 18 psi.
Next added Forge I/C to S3, Milltek cat-back to my ATP D/P, Custom intake, PCV to exhaust, fixed boost leak and i now have 308 bhp and 307 tq on the same Dastek Dyno. :jumping:
I will post up:
I had more torque low-down before but, the extra more than compensates. :party: :party: :party:
--- End quote ---
Nice work mate and nice figures... :congrats:
BUT, you stated this in your first post...
--- Quote from: acespizee on May 11, 2010, 04:32:06 pm ---I made a custom Twin set-up and i make 308 bhp and 307tq (280 bhp at the wheels) on my K03 along with my other mods, up from 280 bhp and 289 tq with Dbilas.
Twin-intakes definetly work.
--- End quote ---
Then this..
--- Quote ---I then took the car to circuit motors by Castle Combe for a dyno day with some friends from my car club Performance Bristol. The car produced 279 bhp and 289 tq on the Dastek Dyno, leading me to beleive it to be very accurate. I also had a sligt boost leak as i was only getting 18 psi.
Next added Forge I/C to S3, Milltek cat-back to my ATP D/P, Custom intake, PCV to exhaust, fixed boost leak and i now have 308 bhp and 307 tq on the same Dastek Dyno. :jumping:
--- End quote ---
I'm not sure you can claim over 20bhp difference over the 2 intakes when you have added all the new bits and more importantly fixed a boost leak :confused:. Which could make a difference of 1bhp upto who knows... :surprised:
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