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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 March 25th, 2017, 21:56   #1
jshwamie
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Join Date: Jan 2017
Location: Michigan
Fuel Economy: 38 mpg
Exclamation 3 Bar map upgrade & tuning? ALH 1.9

I have a new SMIC with 2.5 lower plumbing. rocketchip stage 3, VR6 Clutch, 11mm pump with lift pump. EGR Delete, Kerma TDI Long Runner intake manifold, 2.5 DP - str8 pipe. PP520 nozzles, bilstein suspension with coil overs. Running stock gt1749v turbo. I will be putting a stage 2 or 3 cam in, with head studs and would like to do something with the turbo eventually here. Maybe try to hybridize it somehow to squeeze 200hp (which is my goal for this car) out of it, or upgrade to gt1749vb which I could make 17/22 or go for 1726 instead (daily driver so like the faster spool).
With that said. I would like to upgrade to a 3 bar MAP. I read that u can't just slap it in and be done. You have to adjust some sort of tuning. Can someone explain this a little for me? Keep in mind I have a rocketchip, and I can't seem to get them to reply to me. Basically I want to know if I can buy some software or something and adjust what I need to make the 3 bar work, or would I have to get a new custom tune from say Kerma TDi. Thanks in advance.
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Old March 25th, 2017, 23:42   #2
Nevada_TDI
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Your current tune is written for a 2.5 bar MAP sensor, and if you went to a 3 bar MAP sensor then your tune would need to be rescaled to use the upgraded sensor. At this point there is really no reason to upgrade the MAP sensor without upgrading to a turbo that would be happy at 24 PSI and above.
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Old March 26th, 2017, 10:32   #3
jshwamie
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Hm. Okay. I think I'll have to upgrade my turbo soon here so might have to do just that. Can RC be scaled like that if I do? I've been finding an intermittent loss of power when I get on it. One day it's perfect and the next day you can tell it's just not all there when u punch it. I was starting to notice black smoke when under load as well. My car runs clean as heck and barely would you see black smoke, suddenly am.

Yesterday I turned my car on and my oil light came on and I was missing about 3/4 quart of oil in about 5 days. Prior never lost a drop in 2600 miles. I know I have a bad injector gasket after whomever installed the #3 left it loose. Tightened but it's still puffing black around it. So that and a faintly leaking oil filter gasket are the only signs of anything off. Im going to check my intercooler for oil (upgraded to SMIC in the past month or so) and there was little oil in the stock system. I fear there may be a lot and my turbo is on its way out...
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3 Dr 2000 Volkswagen Golf TDi. SMIC with 2.5 lower pipe. 11 mm pump & lift pump, Bosio Sprint 520 nozzles, Kerma TDi Long Runner manifold so no EGR, stock gt1749v turbo, stage 3 RC, VR6 Clutch, shifter work, 2.5 DP turbo back exhaust. Spec-D head lights, Bilstein shocks & springs sitting on 17's with aftermarket leather seats.
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Old March 26th, 2017, 15:58   #4
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Sounds like you're not making optimal boost at times, hence the smoke (unless it's blue..). Turbo might be on it's way out, best to do some boost logging to see how it's behaving. Block 11 covers requested vs actual and N75 %s. This turbos good for 18 PSI or so, anything past 20 is dangerous.
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Last edited by Owain@malonetuning; March 26th, 2017 at 19:05.
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Old March 29th, 2017, 09:34   #5
jshwamie
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So I cleaned up that injector got a new copper ring for it and put it back in. Checked for boost leaks and see if everything was operating fine with the wastegate. All good there. I didn't get time to pull the boost pipe off the intercooler to see if there was a lot of oil in there though.

We went for a ride and kinda watched everything good. You can tell when you gun it the turbo will intermittently fall off and not create boost. So I don't know if this is the tune doing this or what. Have that stage 3 RC. Never did this before though that's why I don't get it. I can pull the MAF off and there is no change. I attempted to reach out to RC but I can't get them to respond for the life of me. At this point think I'm gunna save up and get a custom tune. Not sure what else to do.

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3 Dr 2000 Volkswagen Golf TDi. SMIC with 2.5 lower pipe. 11 mm pump & lift pump, Bosio Sprint 520 nozzles, Kerma TDi Long Runner manifold so no EGR, stock gt1749v turbo, stage 3 RC, VR6 Clutch, shifter work, 2.5 DP turbo back exhaust. Spec-D head lights, Bilstein shocks & springs sitting on 17's with aftermarket leather seats.
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Old March 29th, 2017, 10:17   #6
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If there is no change when you disconnect the MAF then try replacing the MAF.
You're not using a K&N, are you?
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Old March 29th, 2017, 10:26   #7
jshwamie
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Hello,
No k&n. Stock airbox, which from what I understand will flow enough air to get me to my 200ish hp goal. I took out the snowscreen and that tube all together. I have checked the box for contamination and debris.
As for the MAF. What I could do maybe is borrow my friends from his car that is running good. That should do it hey. If it works better I'll know.
There is still the mystery of where that nearly quart of oil went. But Im assuming it's in my intercooler. Question is. Why.
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3 Dr 2000 Volkswagen Golf TDi. SMIC with 2.5 lower pipe. 11 mm pump & lift pump, Bosio Sprint 520 nozzles, Kerma TDi Long Runner manifold so no EGR, stock gt1749v turbo, stage 3 RC, VR6 Clutch, shifter work, 2.5 DP turbo back exhaust. Spec-D head lights, Bilstein shocks & springs sitting on 17's with aftermarket leather seats.
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Old March 29th, 2017, 10:29   #8
jshwamie
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Quote:
Originally Posted by Owain@malonetuning View Post
Sounds like you're not making optimal boost at times, hence the smoke (unless it's blue..). Turbo might be on it's way out, best to do some boost logging to see how it's behaving. Block 11 covers requested vs actual and N75 %s. This turbos good for 18 PSI or so, anything past 20 is dangerous.
Im going to do this this weekend. I should have time. I'll get some graphs and we'll see what happens. At least have some definitive proof. Then just need to see why.
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3 Dr 2000 Volkswagen Golf TDi. SMIC with 2.5 lower pipe. 11 mm pump & lift pump, Bosio Sprint 520 nozzles, Kerma TDi Long Runner manifold so no EGR, stock gt1749v turbo, stage 3 RC, VR6 Clutch, shifter work, 2.5 DP turbo back exhaust. Spec-D head lights, Bilstein shocks & springs sitting on 17's with aftermarket leather seats.
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Old March 29th, 2017, 12:23   #9
jshwamie
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Here is a video of me accelerating. It has lack of power all across and isn't accelerating as quick as it should. You can see when I'm in fifth gear and slow down to 2k and floor it. It drops RPM's and picks back up. That's where I'm losing my boost and my turbo is none existent. Same results with or without MAF plugged in.

https://youtu.be/E6SCgjD-kew

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3 Dr 2000 Volkswagen Golf TDi. SMIC with 2.5 lower pipe. 11 mm pump & lift pump, Bosio Sprint 520 nozzles, Kerma TDi Long Runner manifold so no EGR, stock gt1749v turbo, stage 3 RC, VR6 Clutch, shifter work, 2.5 DP turbo back exhaust. Spec-D head lights, Bilstein shocks & springs sitting on 17's with aftermarket leather seats.
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Old March 29th, 2017, 14:15   #10
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Is that a clutch slip at the end or the motor stuttering? Possible the vanes on your turbo are sticking too. there are a few threads on here about how to clean that up, but if you are planning to upgrade the turbo soon, maybe don't even bother. Do you have VAGCOM?
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Old March 29th, 2017, 18:41   #11
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Well your clutch is slipping, that much is obvious. Without posting a Group 11 log of a 3rd gear pull there's not much else we can help you with.
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Old March 29th, 2017, 22:46   #12
jshwamie
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You think that's the clutch slipping? I noticed that for the first time yesterday. It doesn't feel like a clutch slip, but Im no mechanic. Ive always experienced clutch slippage when shifting into a gear or starting from a stop. I had it in 5th, let it drop RPM and throttled it. This clutch was put in at 134k miles. I'm at about 230k now. It's Def probably about time for it to start going.
Hankymurphy I do have access to VAG. I'm going to get some recordings here this weekend. See what we come up with. Thanks for your input this far everyone. Cannot thank you enough. Having a hard time figuring this out so, your help is essential to fixing my problem.
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Old March 29th, 2017, 22:54   #13
jshwamie
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Quote:
Originally Posted by Kevinski4 View Post
Well your clutch is slipping, that much is obvious. Without posting a Group 11 log of a 3rd gear pull there's not much else we can help you with.
Im going to be getting a custom tune here. This RC is just too cookie cutter. I need to be able to adjust it and have a tune from somewhere that will actually reply to my emails.. I know my friend has a kerma tune, which he seems to like. But the Malone tune I've read and heard a lot of good as well. I live right in your area as well - Iron Mountain, MI.
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Old March 30th, 2017, 18:53   #14
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Quote:
Originally Posted by jshwamie View Post
Im going to be getting a custom tune here. This RC is just too cookie cutter. I need to be able to adjust it and have a tune from somewhere that will actually reply to my emails.. I know my friend has a kerma tune, which he seems to like. But the Malone tune I've read and heard a lot of good as well. I live right in your area as well - Iron Mountain, MI.

No need for a "custom" tune, the RC3 you have is great. You have a mechanical issue with your car that needs to be fixed.
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Old March 31st, 2017, 15:49   #15
jshwamie
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Quote:
Originally Posted by Kevinski4 View Post
No need for a "custom" tune, the RC3 you have is great. You have a mechanical issue with your car that needs to be fixed.
Think so? I mean everyone is telling me to get a custom tune. All I know, I bought this car with the rc already applied and it hauled ass. Just now is bogging. Should be able to get some logs tomorrow.
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