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TDI Power Enhancements Discussions about increasing the power of your TDI engine. i.e. chips, injectors, powerboxes, clutches, etc. Handling, suspensions, wheels, type discussion should be put into the "Upgrades (non TDI Engine related)" forum. Non TDI vehicle related postings will be moved or removed. Please note the Performance Disclaimer.

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Old May 10th, 2012, 11:18   #511
TDIJetta99
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Quote:
Originally Posted by kooyajerms View Post
Jason, I wanted to see a better video when I saw that one!
I found another one actually.. I think there were only 2 people that recorded it, both with iPhones.. I thought they took better quality videos but I guess not.. I'm spoiled by my DroidX LOL..

Here's the other one.. http://youtu.be/63vXSBk5Ouw
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Old May 10th, 2012, 11:43   #512
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If we're in the game of black reek you need to check out my passat on the dyno......beats that hands down.....haha....

http://m.youtube.com/#/watch?desktop...yyzfWYnI&gl=GB
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Old May 10th, 2012, 12:53   #513
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Don't nock the iPhone, nock the people behind them who don't know how to use them. The dyno videos that several of us recorded for a few GTG's down here were mostly done on iPhone. Mine turned out a bit better than others though.

Jeremy, when I have the equipment to mount my 7D in and outside the car, we'll do some more vids. The video is naturally soft and I'm still working out on some technical details of packaging it after processing.
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Old May 10th, 2012, 13:15   #514
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Ya I know the iPhone can take pretty decent video, but I take every chance I get to make fun of Apple.. My DroidX doesn't really take any better video than a 4s, but I know how to use it LOL..
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Old May 14th, 2012, 11:55   #515
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I catered a dyno day on Mother's day (horrible car guys!) at the local FSR Motorsports shop for a BMW site. They ran out of m powered and supercharged monsters, so they threw me up on the dyno. You can see my catering equipment in the back as we dyno'd. I wasn't planning on it, so I didn't have vag com, or a vid camera with me. Impromptu dyno! At least the datalogger was there.


Boostvalve
I was having trouble making a home made boost valve work for the longest time. We made a couple, bench tested them, and they would bleed at partial/midway boost. Causing some extra lag. So I gave up on them. I got a real boostvalve in, and it seems to be doing it's job now. I didn't think the homemade would be a problem, but it seems there is a seat cut for the bearing that I we didn't account for. I had even bench tested another members boost valve a while back and it was acting funny too. I'll need to take real logs to prove it that spec and actual are meeting correctly.

Dynojet
I had to get a dyno run in here since its been the main dyno we've been using. Lower than I expected, but I guess that Mustang and this Dynojet are pretty close. The WCF that was a concern about wasn't really that off.

First two runs, the valve was clipping it too early, and causing the boost to go a bit funky as it was underboosting then correcting.
#3 run is the good run that the boost valve held 32psi all the way through.

IAT hit max maybe 120*F
EMP was 1:1, got to 40PSI by 5000rpm
Smoke is a bit darker then some other runs I've had, but I think theres some relation to the reset timing (regular advance timing) we had on there. My phone's video ate it.

dynorun #1

dynorun #2

dynorun #3 203whp/320ft-lbs


all runs
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Old May 14th, 2012, 12:42   #516
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Jeremy,
That's nice work!

I'd like to see the car in person! One of these days, we'll meet up.

Great numbers, even for an impromptu dyno run!

Tony
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Old May 14th, 2012, 12:56   #517
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Jfettig has some concerns about the flatness of the torque. We need to figure out if the boostvalve is messing with fueling and timing adversely.

I need a replacement vag com cable, mine went bust.
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Old May 14th, 2012, 13:00   #518
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I Have some concerns about the flatness of the torque. Jeremy should figure out if the boostvalve is messing with fueling and timing adversely.

I just think he can get more torque
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Old May 14th, 2012, 13:16   #519
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guess its better for the package if the torque isnt as high but goes on longer, like trying not the let the power fall off after =)
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Old May 14th, 2012, 13:31   #520
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Of course, as long as thats really what was happening on the dyno. Looking at the other dynos, the torque would hit and drop off like normal. Unless the boostvalve is cutting fueling/timing in a strange way, need the logs to tell.

No gains, but I wasn't really planning the dyno. Just happened.
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Old May 14th, 2012, 13:35   #521
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Quote:
Originally Posted by kooyajerms View Post
Jfettig has some concerns about the flatness of the torque. We need to figure out if the boostvalve is messing with fueling and timing adversely.

I need a replacement vag com cable, mine went bust.

Even though I run a boost valve (set to 26 psi, on my 23psi tune), there are issues that come into play by the nature of our vacuum based system that slow spool with a boost valve.



Example: Let's say you are setting the boost valve at 32 psi, with max boost in tune at 30 psi.
Mid range, ECU calls for 50% duty cycle, let's say that is -14" H2O (-7 psi) to the actuator. The boost valve is set to 32 PSI, but is popping open at 32-7= 25psi because of the differential of pressure between the vacuum and the boost pressure, so the VNT is getting less vacuum than the ECU is demanding, causing slower spool.

But, if you are getting the same max boost in that range, I doubt the boost valve is changing your fueling because you are getting the same airflow.
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Old May 14th, 2012, 13:39   #522
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at 4k fueling starts to be limited below 3050 mbar
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Old May 15th, 2012, 00:56   #523
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Get rid of the boost valve IMO, if its a source of problems tuning it properly will be easier tham faffing around!!
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Old May 15th, 2012, 06:17   #524
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Quote:
Originally Posted by robnitro View Post
Even though I run a boost valve (set to 26 psi, on my 23psi tune), there are issues that come into play by the nature of our vacuum based system that slow spool with a boost valve.



Example: Let's say you are setting the boost valve at 32 psi, with max boost in tune at 30 psi.
Mid range, ECU calls for 50% duty cycle, let's say that is -14" H2O (-7 psi) to the actuator. The boost valve is set to 32 PSI, but is popping open at 32-7= 25psi because of the differential of pressure between the vacuum and the boost pressure, so the VNT is getting less vacuum than the ECU is demanding, causing slower spool.

But, if you are getting the same max boost in that range, I doubt the boost valve is changing your fueling because you are getting the same airflow.

I never noticed a difference in spool with mine, or any others I've set up.. Once the turbo starts making decent boost, you won't get lag at 25psi.. Lag is the delay between when you hit it and when boost starts really ramping up.. Once you're up to 25 the rate of increase won't really slow down enough for you to notice.. What it DOES do is slightly reduce the ramp time as you get close your target boost so it doesn't go too far over.. I was able to set mine up so the boost gauge would snap up to 2psi over target and settle right on target..
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Old May 18th, 2012, 18:44   #525
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Hows the Tuning turning out? any butt dyno gains?
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