T4 2.5TDI with 300++ hp

[shadowmaker]

Here's a video where I tried to time 80-120kmh and 100-150kmh respectively on my T4. Didn't work out...

http://video.tinypic.com/player.php?v=4d6qogz

There was some moisture on the road, but I only used 75% throttle as this setup is new.

I stated 300++ because on the road I use 2,0bar boost with adequate injection but on the rollers pressure won't stay up because there's not enough resistance. That's why there's only 305hp, 590Nm @1,3bar on paper. This power is made with diesel only. Although there's few additional things that I use on the 1/4-mile... This van is in everyday use.

[brackie]

Location?

G'day and welcome, Shadowmaker.
Where are you located? Your time stamp indicates Europe

Nice to see someone squeezing the kws out of a diesel

[phaeton]

300hp around 210kW wow lol

Welcome to the forums shadowmaker

[shadowmaker]

Yep, I'm from Finland and I thought you guys might like to know what we are up to here.

Here's my dyno plot.

228kW, 587Nm



And here's pics of the beast.

[phaeton]

WOW Maris (Green T4) will love your van

[WEDEL.1]

Mmmm, yes, looks good....

Maris

[Volvo Driver]

Looks awesome! the torque figure isn't very high for the hp it puts out, current 2.5 TDi's make 400nm's of torque without anymods.

[shadowmaker]

Looks awesome! the torque figure isn't very high for the hp it puts out, current 2.5 TDi's make 400nm's of torque without anymods.

True, but as you can see my van makes 250Nm @1900rpm which is max torque for original 102hp T4. More important than having lots of torque, is where torque peaks. Nomod TDI engines make their torque peaks around 2200rpm with their tiny turbos but they can't flow gasses enough to make nice max power. It's always a compromise, but I woudn't like to have 600Nm @ 2000rpm region, because it would brake everything. To have 600Nm in 3500rpm is much safer and that's the key for nice top power.

[gldgti]

im impressed, enthused and enlightened. thats great stuff! i just want 100hp out of my little 1.5 and i'll be over the moon.

[shadowmaker]

im impressed, enthused and enlightened. thats great stuff! i just want 100hp out of my little 1.5 and i'll be over the moon.

That's very doable. We are making a Jetta 1.6TD and we have decided to settle for modest 160hp.

Week ago my friend did 230hp, 450Nm @1.6bar with his Golf 1,9TDI -99. There was no smoke so remapper decided to increase fueling. Unfourtunately it made turbo to surge so it was left as it was earlier. Now we have to find a better sized turbo for it as his goal is 250hp. His engine is made much like mine as I told some of my secrets to him.

[GoLfMan]

That's very doable. We are making a Jetta 1.6TD and we have decided to settle for modest 160hp.

Week ago my friend did 230hp, 450Nm @1.6bar with his Golf 1,9TDI -99. There was no smoke so remapper decided to increase fueling. Unfourtunately it made turbo to surge so it was left as it was earlier. Now we have to find a better sized turbo for it as his goal is 250hp. His engine is made much like mine as I told some of my secrets to him.

i wouldnt mind doing that to my Dad's 1.9Tdi Polo what are some secrets to diesel tuning?

[shadowmaker]

I was drag racing with my van at the weekend. Here's my timeslip.



It feels really fast now and that trap speed indicates that there is more than 300hp in it, much more. My ET is always bad compared to trap speed as heavy FWD has lot of traction problems. Although it still manages 0-100kmh in 6,5-7,0s.

[shadowmaker]

Here's a video of my run from last weekend. It's taken with phone camera, so quality is what it is...

http://video.tinypic.com/player.php?v=6f0df1k

[DVR68U]

very impressive, good work.
cheers brenton