www.tdiclub.com

Economy - Longevity - Performance
The #1 Source of TDI Information on the Web!
Forums Articles Links Meets
Orders TDI Club Cards TDIFest 2016 Gone, but not forgotten VAG-Com List Unit Conversions TDIClub Chat Thank You




Go Back   TDIClub Forums > TDI Model Specific Discussions Areas > VW MKIV-A4 TDIs (VE and PD)

VW MKIV-A4 TDIs (VE and PD) This is a general discussion about A4/MkIV Jetta (99.5-~2005), Golf(99.5-2006), and New Beetle(98-2006). Both VE and PD engines are covered here.

Reply
 
Thread Tools
Old December 9th, 2017, 08:44   #16
KLXD
Veteran Member
 
Join Date: Aug 2009
Location: Lompoc, CA
Default

The theory is if it's going to do any good, full strength will get it done quicker.

This may have been mentioned above but if you do it full strength run it for a while to get it into the pump and shut it off for a few hours.
__________________
Saying no to gas for 25 years:

Current: 02 Jetta, Auto; 98 Jetta, 5 Spd; 98 Dodge, 5 Spd, SB, 4x4; 84 Grand Wagoneer with Nissan SD33T, NV4500, Dana 300, Reverse Cut Dana 44, Dana 60

The Black Sheep (Only gasser): 85 CJ, 4.2 w/4.0 Head and Mopar FI.

Past: 85 Mitsubishi PU, 4D55T; 81 Rabbit, 1.6; 80 Dasher, 1.5; 79 Rabbit, 1.5
KLXD is offline   Reply With Quote
Old December 9th, 2017, 10:28   #17
Nero Morg
Member
 
Join Date: Oct 2017
Location: Beaverton, OR
Default

Quote:
Originally Posted by KLXD View Post
The theory is if it's going to do any good, full strength will get it done quicker.

This may have been mentioned above but if you do it full strength run it for a while to get it into the pump and shut it off for a few hours.
That's essentially the same thing I've had to do to my '88 7.3 IDI. Remove fuel filter, fill all the way up, run for a bit, then sit overnight. Technically speaking, couldn't I do the same theory with this filter?


I'm also in the market for getting some new injectors complete. I plan to take the ones that are currently in my car and put them in my project engine, but want some bigger nozzle ones for my daily driver. Should I go with the DLC520? Would it be OK to run without a tune? Where would be a good place to get a set?
Nero Morg is offline   Reply With Quote
Old December 9th, 2017, 13:38   #18
KLXD
Veteran Member
 
Join Date: Aug 2009
Location: Lompoc, CA
Default

That would be more effective than putting it in the tank. If you do it that way do it when the engine is cold so hopefully the fuel is recirculating through the filter rather than going back to the tank so it doesn't get diluted as quickly.

I have no idea at what temp recirculation stops. I'd guess it flows through unless it gets pretty cold.
__________________
Saying no to gas for 25 years:

Current: 02 Jetta, Auto; 98 Jetta, 5 Spd; 98 Dodge, 5 Spd, SB, 4x4; 84 Grand Wagoneer with Nissan SD33T, NV4500, Dana 300, Reverse Cut Dana 44, Dana 60

The Black Sheep (Only gasser): 85 CJ, 4.2 w/4.0 Head and Mopar FI.

Past: 85 Mitsubishi PU, 4D55T; 81 Rabbit, 1.6; 80 Dasher, 1.5; 79 Rabbit, 1.5
KLXD is offline   Reply With Quote
Old December 9th, 2017, 19:06   #19
Nevada_TDI
Veteran Member
 
Join Date: Aug 2008
Location: Reno, sort of...
Default

The DLC 520's are somewhat equal to the European 110 HP factory nozzles, so I am not sure what you are thinking power wise. The DLC520's with a proper tune can flow enough fuel to make around 150 HP so unless you have bigger long-term plans and a bigger turbo, they might work great in your application.
__________________
_______________
2001 Jetta GL TDI, Tinted, Ventectomy, Catectomy, EGR-ectomy, TDTuning, HIFLO .216's, Stealth 17/56 Garrett, VCDS Hex+CAN, South Bend Daily Driver 2 Clutch, DG Short Shifter, Frostheater, Baldwin Fuel Filter, Previous Diesel: 1983 Rabbit Diesel
Nevada_TDI is offline   Reply With Quote
Old December 9th, 2017, 19:57   #20
UhOh
Veteran Member
 
UhOh's Avatar
 
Join Date: Dec 2014
Location: PNW
Default

DLC520s will run fine w/o a tune, though a tune is always best (if you go above a Malone Stage 1.5 tune your stock clutch will likely slip- been there done that!). Great nozzles for a bump in power. I tested w/o a tune and found the power increased to be quite noticeable. All three of my Golfs have them (with Malone Stage 2 tunes): but all are running stock VNT15s.
UhOh is offline   Reply With Quote
Old December 10th, 2017, 08:31   #21
Nero Morg
Member
 
Join Date: Oct 2017
Location: Beaverton, OR
Default

I think I'll go with the DLC520's then, I'm mostly looking for just a bit more bang, at times this car feels like it has no guts to it. So sounds like those nozzles with a 1.5 tune and I'm golden then. Any chance y'all have some spare injectors lying around?
Nero Morg is offline   Reply With Quote
Old December 10th, 2017, 09:51   #22
UhOh
Veteran Member
 
UhOh's Avatar
 
Join Date: Dec 2014
Location: PNW
Default

Quote:
Originally Posted by Nero Morg View Post
I think I'll go with the DLC520's then, I'm mostly looking for just a bit more bang, at times this car feels like it has no guts to it. So sounds like those nozzles with a 1.5 tune and I'm golden then. Any chance y'all have some spare injectors lying around?
If you feel that the car doesn't have any guts then I'd address that FIRST before buying and installing any performance bits. Any underlying issues will likely only be amplified with/by performance mods.

Yeah, I have a spare set, but they're used to cycle into other cars (will be looking to have them done up with new nozzles for the daughter's wagon- have FIVE ALHs).
UhOh is offline   Reply With Quote
Old December 10th, 2017, 11:15   #23
Nevada_TDI
Veteran Member
 
Join Date: Aug 2008
Location: Reno, sort of...
Default

My 2001 Jetta had a Stage 3 tune installed and never slipped the factory clutch once for over 100k miles; this was the second 100k miles I am talking about. The clutch was still tight at over 210k miles, but the flywheel was getting chewed up so I swapped it out. Granted I didn't make a habit of beating the clutch up on a regular basis, but I was surprised at how long it lived none-the-less.
__________________
_______________
2001 Jetta GL TDI, Tinted, Ventectomy, Catectomy, EGR-ectomy, TDTuning, HIFLO .216's, Stealth 17/56 Garrett, VCDS Hex+CAN, South Bend Daily Driver 2 Clutch, DG Short Shifter, Frostheater, Baldwin Fuel Filter, Previous Diesel: 1983 Rabbit Diesel
Nevada_TDI is offline   Reply With Quote
Old December 10th, 2017, 18:26   #24
Nero Morg
Member
 
Join Date: Oct 2017
Location: Beaverton, OR
Default

Quote:
Originally Posted by UhOh View Post
If you feel that the car doesn't have any guts then I'd address that FIRST before buying and installing any performance bits. Any underlying issues will likely only be amplified with/by performance mods.

Yeah, I have a spare set, but they're used to cycle into other cars (will be looking to have them done up with new nozzles for the daughter's wagon- have FIVE ALHs).

Damn that's a lot! Gotta say I'm a little envious. They're still a bit of a price over in this neck of the woods, but I'm trying to convince my wife to let go of her B5 wagon v6 and get a TDI, but she refuses to drive a stick, since 01M's are so... well you know LOL

I don't think there's neccesarily an issue when it feels gutless, there's definitely tons of low end torque, but the horsepower is a bit lower than I'd like. Other than possibly needing bigger nozzled injectors now that it's a stick, it drives and runs in my opinion pretty darn well. I did order a set of used factory injectors that came out of a stick ALH off of ebay this morning. Hopefully I'll see them soon. I'll clean the tips up and stuff them in if they pass a pop test.
Nero Morg is offline   Reply With Quote
Old December 10th, 2017, 18:59   #25
Nevada_TDI
Veteran Member
 
Join Date: Aug 2008
Location: Reno, sort of...
Default

The 11mm pump with stick nozzles will add a bit more Uumph!, but an 11mm pump with .205's could be a real blast to drive especially after a proper tune. In my situation a Stage 3+ tune is really my favorite for all-around driving; I have 22PSI at altitude, plenty of power and I can still crack 50MPG on the freeway. I have a few different bada$$ Stage 4 tunes; although they have significantly more power the reduced fuel economy just isn't worth it for me right now.
__________________
_______________
2001 Jetta GL TDI, Tinted, Ventectomy, Catectomy, EGR-ectomy, TDTuning, HIFLO .216's, Stealth 17/56 Garrett, VCDS Hex+CAN, South Bend Daily Driver 2 Clutch, DG Short Shifter, Frostheater, Baldwin Fuel Filter, Previous Diesel: 1983 Rabbit Diesel
Nevada_TDI is offline   Reply With Quote
Old December 11th, 2017, 00:24   #26
hey_allen
Veteran Member
 
Join Date: Nov 2006
Location: Tacoma, WA
Default

I have an 11mm pump feeding a set of stick injectors currently, but the tune is actually a Malone stage 3 that is set up for a set of Sprint 520s that I had to pull back out to send for rebalancing.

Even with the stock injectors in it, the tune and 11mm pump give it a solid boost in performance, and likely decent MPG, if I could keep my foot out of it..


That said, when I swapped the pump in, someone had already hammer modded it somewhere along the line, and it was set richer than normal. I was only able to adapt it down to an IQ of 2.2, until I finally resorted to beating on it myself.
That was a wild, but oh so smoky ride, while it was running in the IQ 1.8-2.0 range! If I so much as looked at the throttle for too long, I got a shove in the seat, 22 psi indicated on the Torque boost gage, and a block long dark gray cloud across two lanes of traffic. It also resulted in a tank average of 35mpg, when the pump and tune were only on the car for the last half of the tank!


As to using Diesel Purge, for what it costs, I take the time to run it at full concentration for the ~30 minutes that it usually takes to use it up.
It's not difficult, and it only really takes a couple of lengths of hose and a container to run it out of. You can even run it out of the can, if you're careful to keep from running it all the way empty and having to re-prime the pump and injectors.

My first experience using it was on a MB 300SD, and I just used a rinsed and dried Gatorade bottle, so that I could see the fluid level. (Oh did that car ever smoke, when I ran Purge through it! Ran a good bit smoother afterward though.)
hey_allen is offline   Reply With Quote
Old December 11th, 2017, 09:50   #27
Nevada_TDI
Veteran Member
 
Join Date: Aug 2008
Location: Reno, sort of...
Default

Taking the IQ down numerically raises the amount of fueling available; you might want to take the IQ up to 3.5 or 4.5 and see if that fixes the coal rolling issue you are having.
__________________
_______________
2001 Jetta GL TDI, Tinted, Ventectomy, Catectomy, EGR-ectomy, TDTuning, HIFLO .216's, Stealth 17/56 Garrett, VCDS Hex+CAN, South Bend Daily Driver 2 Clutch, DG Short Shifter, Frostheater, Baldwin Fuel Filter, Previous Diesel: 1983 Rabbit Diesel
Nevada_TDI is offline   Reply With Quote
Old December 11th, 2017, 12:32   #28
hey_allen
Veteran Member
 
Join Date: Nov 2006
Location: Tacoma, WA
Default

Quote:
Originally Posted by Nevada_TDI View Post
Taking the IQ down numerically raises the amount of fueling available; you might want to take the IQ up to 3.5 or 4.5 and see if that fixes the coal rolling issue you are having.
I have already adjusted it, it's now around 4.8, and much more mild mannered (until I put my foot in it and keep it there...)

As it sits currently, it will leave a haze behind if I bury the throttle, but that's it.
I'll have to see what it does once the 520 injectors come back from being re-balanced and the pressure set correctly. They were initially from a 190bar equipped car, and they were left there when the nozzles were installed. With this car wanting 220bar injectors, they were opening early, as well as having less efficient atomization of the fuel.
hey_allen is offline   Reply With Quote
Old December 16th, 2017, 15:42   #29
Nero Morg
Member
 
Join Date: Oct 2017
Location: Beaverton, OR
Default

Well found out I had a bunch of garbage injectors. Pop off pressures were 2500psi 2800psi 3000psi 2700psi, and #1 bled down BAD. In the clear now, looks like my timing is a little advanced on the graph, IQ staying at 4.0, IQ cylinder balance is staying steady. All I had to do what adjust and clean literally everything haha but now I have a set of 706 nozzled injectors installed and everything looks just perfect.

As for tuning, I think at some point I'll go with a 1.5 or maybe a 2 at most. Yay/nay? I would also like to get the EGR turned out, along with the immo.
Nero Morg is offline   Reply With Quote
Old December 18th, 2017, 23:07   #30
Thomas83
Veteran Member
 
Join Date: Jul 2013
Location: Ontario, CA
Fuel Economy: 54.87-Best / 52.554-Current
Default

Quote:
Originally Posted by Nero Morg View Post
Well found out I had a bunch of garbage injectors. Pop off pressures were 2500psi 2800psi 3000psi 2700psi, and #1 bled down BAD. In the clear now, looks like my timing is a little advanced on the graph, IQ staying at 4.0, IQ cylinder balance is staying steady. All I had to do what adjust and clean literally everything haha but now I have a set of 706 nozzled injectors installed and everything looks just perfect.
As for tuning, I think at some point I'll go with a 1.5 or maybe a 2 at most. Yay/nay? I would also like to get the EGR turned out, along with the immo.
Just to chime in here; My '02 Golf has almost 300K, Southbend Stage 2 Daily, VNT-17, DLC764, and a Malone Stage 4, dyno'd @157HP & 294tq, and still 52.554mpg @ 75mph on stock gear 5-spd. (Stopping bits have been upgraded also) Looking to upgrade my clutch, tune, and IC after Summer 2018 and try to squeeze about another 10-15% more power but not get too much coal.
It's fun, very fun! Way better than stock need to check my IQ this weekend and do some other Maintenance stuff, but...
I think you're in for a treat. Nice work so far, keep it up!
Thomas83 is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Suggestions on Touareg mods jimj911 VW Touareg TDIs 0 May 20th, 2016 03:37
FS or Trade - Mk4 ALH 5spd swap for $$ or ALH Mods Der MEKnIZEd Wolf Private TDI Items for Sale/Wanted 2 March 28th, 2012 20:45
Suggestions for the top 3 mods for a new TDI Golf Wagon? crashtested VW MKVI-A6 Golf family including Jetta SportWagen (~ 2010-2014) 29 June 20th, 2010 11:45
Suggestions on what mods I should make to my stock 97 Passat Hintertux VW MKIII-A3/B4 TDIs 63 January 15th, 2010 09:53
Mods suggestions for 06 tdi.. superd TDI Power Enhancements 5 October 31st, 2007 13:43


All times are GMT -7. The time now is 14:04.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Copyright - TDIClub Online LTD - 2017
Contact Us | Privacy Statement | Forum Rules | Disclaimer
TDIClub Online Ltd (TDIClub.com) is not affiliated with the VWoA or VWAG and is supported by contributions from viewers like you.
1996 - 2017, All Rights Reserved
Page generated in 0.15856 seconds with 13 queries
[Output: 131.84 Kb. compressed to 111.03 Kb. by saving 20.81 Kb. (15.78%)]