600rpm for 6grams? peece off!

**Transporter** · 16-10-2011, 07:10 AM

Scotty, I apologize, and I’m glad that it worked for you. I have no doubts that it worked for many that had a bad electrical connection in the MAF connector. Cleaning the MAF sensor itself (not the pins in the connector) with the MAF cleaner will help if it was for whatever reason dirty (wrong or too dirty air filter).

IMO, you would most likely achieved the same with just cleaning the sensor and disconnecting and reconnecting the connector and maybe if you would have just smear the contacts in the connector with that dielectric grease you wouldn't get CEL on. As Greg mentioned, because of the excess of the grease in the connector the resistance and voltage output from the MAF had changed hence the CEL “ON”, after everything warmed up, the excess of the dielectric grease leaked away a bit and the fault disappeared, the CEL “OFF”.

Scotty you should've and anybody who wants to do the same look closely at the pins in the MAF connector first and if corroded you can clean it with the with el. contact cleaner that should also protect the contacts and then just smear them very lightly with that dielectric grease (if you have to). Also check that you can see the shiny lines from the female contact on the male contact surface at the MAF sensor, if not you can adjust the tension by squeezing the female contact (gently). It will work the same for you as long as they were at fault.

Friends again...?

**Greg Roles** · 16-10-2011, 07:10 AM

I did it, even though I expect nothing on the MKV, there are a lot of people swearing by it in the USA....

**GoLfMan** · 16-10-2011, 09:42 AM

I'll do this next Friday

**Buller_Scott** · 17-10-2011, 11:26 AM

Originally Posted by Transporter

Friends again...?

yeah, always!

well what you said makes perfect sense. i should, in all my ramblings, probably have also added (for the benefit of others who didnt want to sift through the tdi club threads) that the reason i performed the "cage mod" was as follows:

- people were hailing it as a great preventative mod - why toss a good maf somewhere down the line, when taking care of the maf / connectors itself, is cheap insurance?
- some people were reporting NO change whatsoever, but were saying "well, at least i know i've taken care of my maf connectors now"
- better still, others were reporting back with increased driveability across the rev band
- even better still, others were reporting the ability to rev higher than before
- best yet, some were pinching themselves, the differences were that good.

i fall into the group of those who had to pinch themselves. perhaps my OP should have been more reserved in its optimism, but dammit, i couldnt contain my excitement - i now "short shift" at 4,000rpm.

i've cleaned the maf itself before, with not this level of difference. and you may very well be right - a little grease would have been more than enough. i was simply "going with the flow" of the tdiclub thread with pertained to packing the living daylights out of the maf connector.

as for your last paragraph, this is what i believe i experienced, trying to get the connector seated - and yes, you're right, it would have been much easier with less grease on there in the first place.

cheers,

scotty

**Greg Roles** · 28-10-2011, 08:36 AM

Well my TDI is driving very differently with the "grease/cage mod".

It's also showing MAF errors, and I'm still investigating, but at this stage I believe what this does is short out the contacts, throw a minor error that doesn't register a CEL light, and the car defaults to a MAF-less fuel map.

My TDI is now no longer spiking to 23-24psi and settling to 21-22 on a WOT hill effort. Now it hits a 20psi max, and settles to about 19psi. It is FAR more aggressive getting there, and the car hits boost a lot more freely, it "seems" to rev a bit easier too. Not massive, but quite noticable to me. What I think has happened is the VNT vanes are more aggressive, and there is more mid range wack, but it is limited up top.

Acceleration is definately better on boost, but the lag is the same. On boost the car is now wandering sideways in second, and that's new, it is torque steering a bit. It does however feel flatter up top, but I think the mod has just moved the "area under the curve" towards the mid range. Overall it's a fun change, and I will continue to monitor it and the errors, but if you want a bit of a change for the price of some special grease, it's an easy bit of fun. Perhaps it has a bigger effect on the 1.9 engine, but it would follow that each car has it's own "MAF shortage" default map, so each diesel would be different.

Interesting Scotty, interesting.....and for the record my MAF plug and contacts were pristine, so no bad contacts there!

As always, if you aren't fully prepared to rebuild your engine should it blow up from these backyard mods, just don't do it!

**Buller_Scott** · 28-10-2011, 05:03 PM

Originally Posted by Greg Roles

Well my TDI is driving very differently with the "grease/cage mod".

It's also showing MAF errors, and I'm still investigating, but at this stage I believe what this does is short out the contacts, throw a minor error that doesn't register a CEL light, and the car defaults to a MAF-less fuel map.

My TDI is now no longer spiking to 23-24psi and settling to 21-22 on a WOT hill effort. Now it hits a 20psi max, and settles to about 19psi. It is FAR more aggressive getting there, and the car hits boost a lot more freely, it "seems" to rev a bit easier too. Not massive, but quite noticable to me. What I think has happened is the VNT vanes are more aggressive, and there is more mid range wack, but it is limited up top.

Acceleration is definately better on boost, but the lag is the same. On boost the car is now wandering sideways in second, and that's new, it is torque steering a bit. It does however feel flatter up top, but I think the mod has just moved the "area under the curve" towards the mid range. Overall it's a fun change, and I will continue to monitor it and the errors, but if you want a bit of a change for the price of some special grease, it's an easy bit of fun. Perhaps it has a bigger effect on the 1.9 engine, but it would follow that each car has it's own "MAF shortage" default map, so each diesel would be different.

Interesting Scotty, interesting.....and for the record my MAF plug and contacts were pristine, so no bad contacts there!

As always, if you aren't fully prepared to rebuild your engine should it blow up from these backyard mods, just don't do it!

sick! i know these sort of tdi diy mods can have different results for different cars, but the reason i started this thread was because of my excitement at the effect it had on my car - glad you've found positive results too, greg

now, you just need to do the "swiss cheese" mod on the pre-filter part of the airbox, haha

i know someone else who'll be having this done to their pog tdi tonight, as a matter of fact

**Greg Roles** · 28-10-2011, 06:11 PM

Thanks Scotty, but would that be the stock airbox that has been sitting in a cupboard for about 3 years now?

**Buller_Scott** · 29-10-2011, 12:12 AM

Originally Posted by Greg Roles

Thanks Scotty, but would that be the stock airbox that has been sitting in a cupboard for about 3 years now?

hahaha it might be!

speaking of which - josh, how's that isht going?!?!?!?! there's nothing in it for me, but i sincerely hope that anyone who tries this mod in aus, gets the same results that you and i have, greg.... just another Q - have you noticed more reasonable LOW DOWN driveability around town like i have (e.g. gently accelerating from 1100rpm @40km/h in third gear etc)?

keep it coming, people!

**GoLfMan** · 29-10-2011, 07:58 AM

Originally Posted by Buller_Scott

hahaha it might be!

speaking of which - josh, how's that isht going?!?!?!?! there's nothing in it for me, but i sincerely hope that anyone who tries this mod in aus, gets the same results that you and i have, greg.... just another Q - have you noticed more reasonable LOW DOWN driveability around town like i have (e.g. gently accelerating from 1100rpm @40km/h in third gear etc)?

keep it coming, people!

Feels good!

didn't rev it to the same extent you did, but thats because my one runs out of puff beyond 4k anyway

certainly does feel a little more toey down low though, I like it!