TD05 20g Twin Scroll. Guesstimations?
28 October 2015, 03:33 PM
#35
The dyno graph posted shows that to be way too laggy, points to it being pretty poor quality, on the road that must be horrible to drive.
My old (non-billet) 20g spooled about 1500rpm earlier than that if I'm guessing right where the rpm is (seeing it's been cutoff the pic).
The other thing is - look at where it achieves and holds that power - that wouldn't be usable at all, just nasty.
What's the point in achieving 400bhp if it's only usable at 6000rpm and between 1500-6000rpm you have way less.
One other thing - if you want 400 I'd be tempted to upgrade to at least a 290 or even 340lph fuel pump, a standard walbro (what you have) probably won't last long.
Re the comments on US "wheel horse power" it seems like some of their dynos read way higher than ours, some of the claimed figures on the 2.5's out there are just outright ridiculous and has me thinking total BS.
I'd take any of that with a pinch of salt
My old (non-billet) 20g spooled about 1500rpm earlier than that if I'm guessing right where the rpm is (seeing it's been cutoff the pic).
The other thing is - look at where it achieves and holds that power - that wouldn't be usable at all, just nasty.
What's the point in achieving 400bhp if it's only usable at 6000rpm and between 1500-6000rpm you have way less.
One other thing - if you want 400 I'd be tempted to upgrade to at least a 290 or even 340lph fuel pump, a standard walbro (what you have) probably won't last long.
Re the comments on US "wheel horse power" it seems like some of their dynos read way higher than ours, some of the claimed figures on the 2.5's out there are just outright ridiculous and has me thinking total BS.
I'd take any of that with a pinch of salt
Last edited by MrNoisy; 28 October 2015 at 03:36 PM.
29 October 2015, 03:26 PM
#36
I've already spoken to Duncan about that 20g and the car it was on. He thinks it could be an issue with the car, in short.
My mapper has done a few Kinugawa 20g turbo set ups (albeit no twin scrolls) and all have performed well - spool and power.
I have a 340lph fuel pump in the garage I may drop in depending on the duty this 255 registers during mapping, but in theory it should be OK for high 300s/low 400s.
As for American dynos, I can't comment...
My mapper has done a few Kinugawa 20g turbo set ups (albeit no twin scrolls) and all have performed well - spool and power.
I have a 340lph fuel pump in the garage I may drop in depending on the duty this 255 registers during mapping, but in theory it should be OK for high 300s/low 400s.
As for American dynos, I can't comment...
29 October 2015, 03:47 PM
#39
)Only 8 months old, so will be kept in for the meantime!
03 November 2015, 11:22 AM
#44
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I have a Kamak billet 20G with STS wheel as wel.. 8cm rear housing, and 1 bar A@3500rpm in 5th gear.. (6spd)... Spool is fine.. 1.6 bar @ 3800, the rest after that goes way to quick to read the gauges 
They look, feel and sound like quality.. tough choice between the kamak or a blouch.
They look, feel and sound like quality.. tough choice between the kamak or a blouch.
03 November 2015, 11:37 AM
#45
I have a Kamak billet 20G with STS wheel as wel.. 8cm rear housing, and 1 bar A@3500rpm in 5th gear.. (6spd)... Spool is fine.. 1.6 bar @ 3800, the rest after that goes way to quick to read the gauges
They look, feel and sound like quality.. tough choice between the kamak or a blouch.
They look, feel and sound like quality.. tough choice between the kamak or a blouch.
03 November 2015, 11:59 AM
#46
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Whilst mapping about 350hp/400Nm.. almost no ignition advance, due to having knock.
We later found a problem with the fuel pressure.. so no final numbers yet, but it already felt like a rocket. (and i was used to 270hp/380nm
20g's arent awake or making power under 1.2.. 1.6 bar is a good target for about 380 crank hp.
We later found a problem with the fuel pressure.. so no final numbers yet, but it already felt like a rocket. (and i was used to 270hp/380nm
20g's arent awake or making power under 1.2.. 1.6 bar is a good target for about 380 crank hp.
Last edited by Anko Dragt; 03 November 2015 at 12:01 PM.
03 November 2015, 12:27 PM
#47
Whilst mapping about 350hp/400Nm.. almost no ignition advance, due to having knock.
We later found a problem with the fuel pressure.. so no final numbers yet, but it already felt like a rocket. (and i was used to 270hp/380nm
20g's arent awake or making power under 1.2.. 1.6 bar is a good target for about 380 crank hp.
We later found a problem with the fuel pressure.. so no final numbers yet, but it already felt like a rocket. (and i was used to 270hp/380nm
20g's arent awake or making power under 1.2.. 1.6 bar is a good target for about 380 crank hp.
I'm hoping to break the 400hp mark with mine to make it worthwhile, as I'm already at 365hp/365ftlbs at the crank.
Last edited by Gooch89; 03 November 2015 at 12:29 PM.
03 November 2015, 09:48 PM
#48
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im still trying to get the remap finished on mine and have the same turbo. Need larger injectors to make the most of it and find a mapper that has time to finish it for me!
Interested to see how you get on with yours.
Did you go for the billet wheel in yours?
Interested to see how you get on with yours.
Did you go for the billet wheel in yours?
03 November 2015, 10:18 PM
#49
Doesn't look billet in the photos
me too
09 November 2015, 07:00 PM
#58
09 November 2015, 08:57 PM
#59
