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TDI Power Enhancements Archives on TDI Power Enhancement related items.

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Old December 30th, 2008, 20:00   #406
Scott02
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Peter,
Where's your MAP sensor placed in comparison to the old tubing?
And how is the Boost curves you were looking at made? Did you Tee into a fitting on the intake manifold or... ?

I don't know too much about dyno's, but is this one of those ones that a 4th gear pull to redline takes like 5 seconds, or like 45 seconds?

The 400rpm later torque peak is what i feel is the fishy part.
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Old December 30th, 2008, 21:05   #407
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MAP sensor is in the same place. And I'd say the pull takes about 10 seconds (that's a WAG, and I was waiting for something to break so it may have seemed longer than it was).

And what I learned today is that a dyno curve may not be a good indicator of what happens to the car on the street. What gear you're in, starting revs, whether or not you're on a hill or if the car's loaded or not--all these things affect when the car makes power. The peak numbers will be the same (or lower) but the position and shape of the curve can change.

What's also interesting to me now is I cannot make the car smoke now. Before I could 'catch' the turbo at low revs and get a puff of smoke if I got on the accelerator at, say, 1400 RPM in 3rd. Now it doesn't do that. And in the past if I trundled around town for a day or two and then got on the highway it would smoke initially. Not now.
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Old December 30th, 2008, 23:20   #408
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Same thing happen to me, recently I changed my IC piping from 2" to 2.5", now I see that my car has definitly less smoke, less egt's (big advantage) in the other hand I lost a little bit of the quickness from the get go I could feel it I know my car,,I really like quick sprints they are fun. but now I believe that if I continue to open the air flow with long duration cam and porting the head, my air swirl will suffer even more, making my car more letargic from a quick roll, peaking at a higher RPM,(no fun for me),

I am not an expert on this matter and please correct me if I am wrong, but I think If you would like to open the air passage in your car big time, I think the 17/22 is not the appropriate turbo to do that, you would need a bigger turbo with bigger blades to push all that air through the bigger tunnel.

I will have my car Dyno probably next month, so we'll see what kind of numbers I get after going from 2.0" to a bigger 2.5" IC piping , I will compare it with my old dyno, IBW I am also afriad about taking my car to the dyno, I would not like to pick up one of the rods flying across the shop.

Last edited by MAXRPM; December 31st, 2008 at 02:32.
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Old January 1st, 2009, 21:20   #409
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Here is my last one , allready posted on another topic but here is the right place:




Mods are on my sign.
Did not dyno futher into the RPMs because this was a test run... I was adjusting the remap but then I read the numbers and 180bhp was enought so boost was left at 1,65bars.

Engine is now with 342k kms , driving with this setup for 30k and runs fine torque from really low RPMs and power till 5000rpm

Regards,
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Old February 25th, 2009, 18:22   #410
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Finally got a full run with torque numbers after two failed attempts at different shops. Only problem with this one was I think the guy ran the car in 3rd because the speed seems pretty low compared to other '09s.

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Old February 26th, 2009, 18:23   #411
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Thanks for posting. That's consistent with what I saw on my DSG...which is somewhere in this thread posted around 11/22/08 ish...
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Old February 26th, 2009, 19:03   #412
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This Cars for some reason are not easy to dyno, and RPM are allways wrong... 6K on diesel ?.......
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Old February 26th, 2009, 19:21   #413
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That's speed, not RPM.
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Old February 26th, 2009, 22:08   #414
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And some TDI's spin 6k... So many dyno shops have issues picking up a tach signal. Personally, I would refuse to pay if they couldn't produce an accurate tach signal, not something generated off of speed/gearing/math. A REAL signal. It wasn't too hard to stick some reflective tape on the side of my IP pulley on my ALH but I'm not sure how to do the PD...
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Old March 4th, 2009, 19:25   #415
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Quote:
Originally Posted by engineperformancetuning
This Cars for some reason are not easy to dyno, and RPM are allways wrong... 6K on diesel ?.......
Not sure why the graph is in MPH. They had an optical pickup...whether they used it or just used math to come up with the torque numbers is beyond me. They wouldn't let me see the car while being dynoed for "insurance purposes" but I could hear them running it. I do think they should have asked me about the RPM/MPH deal for the graph though.
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Old March 28th, 2009, 19:37   #416
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Nothing new done to the car, but I went with my buddy up to a Mini dyno day and threw Josie on the rollers. Numbers are a little lower than my last dyno at NEDD VII, but in line with what I would expect:



I am thinking a lift pump will be next.
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Old March 28th, 2009, 20:13   #417
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That's a sexy curve right there! Lift pumps should be the next mod after clutch/nozzles/tune on ALH's!
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Old March 29th, 2009, 13:50   #418
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Here is my lastest dyno with original nozzles. We can maybe do few more
horses out, but this is near to the limit for the 150hp AKN original.

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Old March 29th, 2009, 13:59   #419
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Old March 29th, 2009, 14:22   #420
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Well done Fen!!
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