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Go Back   TDIClub Forums > VW TDI Discussion Areas > TDI Power Enhancements

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 June 29th, 2019, 07:13   #16
[486]
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Originally Posted by IndigoBlueWagon View Post
Not sure what you're saying here. I realize that smoke maps need to be attended to, but the tune should adjust these parameters and still provide a power increase. Keep in mind that ALH engines don't measure EGTs. Of course it's up to the tuner to not set the engine up to self-destruct, but the hardware the OP has won't test those limits with a well written tune.
I'll make it simpler.
big nozzles, no tune-----------unlimited torque and EGT
any nozzles, decent tune----software limited torque and EGT

engine not monitoring EGT does not mean it won't quickly destroy a first gen VNT system, the opposite in fact
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Old June 29th, 2019, 07:16   #17
IndigoBlueWagon
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Whatever. I think the tune needs to be looked at, or there's something mechanically off with the car.
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Old June 30th, 2019, 19:15   #18
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Originally Posted by [486] View Post
everything

you want it to idle at 3600 rpm? sure
want it to fart lots of smoke? sure
want it to run normal wastegated turbos? sure
manual glow plugs? sure
run relatively smoke free with the injector nozzles from a 12v cummins? sure

The CR motors are even more ridiculous, you can inject fuel on the exhaust stroke if you want. I don't play with those though, they're still too spendy.

thanks...



I tune my CR truck, yeah it is awesome. I use the post event to spool the turbo, works awesome... drops off after about 1500 rpms.
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Old July 1st, 2019, 17:07   #19
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Back in the day when I went from just .230 nozzles to a stage 3 tune it was quite the difference. Then when I added the 17/22 and stage 5 it was another "whoah" moment, so you should of felt a way bigger difference.

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Old September 9th, 2019, 23:36   #20
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Sorry for taking forever on an update. I've been without a laptop and now that I've finally got one to do logging and stuff I was able to get some positive results.

I re-did my turbo outlet piping because it was really bad. I got the VNT17 adapter and cut the old house to fit and it's much better now. The old one may have been leaking some boost. At the very least it was probably restrictive.

I also did some data logging with my new laptop and saw my Injection Quantity was set up at 5.6. I dropped it to 3.6-3.8. Immediately after changing that, throttle response and low-end power improved immensely. The car became decently quick. I'll be keeping my eye on EGTs.

DBW LLC's site says that I should be using IQ of 5-7 for DLC1019s... Could something be holding back my fueling and I just increased it back as a workaround? Timing is currently set according to DBW recommendation (slightly advanced).

As for the other logs, boost requested vs actual and MAF specified vs actual matched up pretty good. Anything else I could be logging to look for potential problems?
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Old September 10th, 2019, 10:11   #21
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Every cars iq will vary. Especially if you have a 10mm pump vs 11mm. If you're happy with it, I'd leave it. Otherwise, you didn't mention if you have a 3bar map or not. That'd be the next step. Don't forget to have the tune adjusted for it.
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Old September 10th, 2019, 10:17   #22
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Does the car smoke a lot on hard acceleration? If it does, you can raise the IQ again. If it doesn't, I'd lower it further until it does start to smoke. Also keep an eye on FE, although it should not be affected.
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Old September 10th, 2019, 11:08   #23
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I'd bump it down to 3, no reason to have it at 5-7 other than a bit less smoke possibly.

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Old September 10th, 2019, 13:34   #24
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I use to leave my Jetta around 2.5 for the IQ. Didn’t smoke a ton but still smoke thru the revs.
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Old September 10th, 2019, 17:07   #25
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Every cars iq will vary.
this

bump it around until the transition from no fuel is smooth, that is the ONLY thing you should be adjusting the pump topcover position for, everything else is done in the maps
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Old September 10th, 2019, 21:37   #26
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I'll keep messing with it till it's perfect. Thanks a lot for your help, everyone.

I've still got the stock MAP sensor. If I get everything dialed in perfectly and I'm still not satisfied, I'll think about going to 3bar + next stage tune
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Old September 11th, 2019, 07:01   #27
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I like to set the IQ in VCDS to 32768 (default) and then hammer the pump until that setting shows an IQ of about 3.0. Then adjust up or down electronically from there.
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