Vr6 Maf

[S2central.net]

When you have to soak up an inch or more of water in the drivers side footwell - believe me - its a 'bother' !

[20Vcqdriver]

When you have to soak up an inch or more of water in the drivers side footwell - believe me - its a 'bother' !

Just get yourself a bilge pump!!!

[Knight Rider S4]

ain't it just the difference between a bit dirty stock MAF versus a new VR6 MAF? Or are both items new?

2nd hand MAF as it was just a test to see the difference and it cost peanuts (which helped)

To be more precise on difference ..It is like there is less lag if that makes sense

[mark_s2]

Paul - Have a Pico ADC-12 (parallel port) that you are welcome to borrow. Should be up to the task...

[S2central.net]

I have a Zt2 on order now... When I get that installed one of things I'll be logging is MAF voltage - but thanks for the offer.

[quattrostyle]

2nd hand MAF as it was just a test to see the difference and it cost peanuts (which helped)

To be more precise on difference ..It is like there is less lag if that makes sense

interesting then, is the VR6 MAF less expensive than the S2 one? And does it have the same dimensions?

[avants2turbo]

I went out in an Avant car with the VR6 maf in it and I have to say it was really really smooth running off the stock map

I would assume you are refering to my Avant Jason?

if so its not a stock map, its running the MTM remap

the car was RR at QST just after I bought it, with the stock MAF and it made about 280bhp/280lbs/ft

I then managed to put my finger through the MAF wire when i took the air filter out to clean it and so all I had spare was a OBD1 VR6 MAF, so bunged it on and i could instantly feel a difference!

The car was then RR at AMD in thurrock and the car made 295bhp and 324lbs/ft

now i know that different RR will always give different readings but 44lbs/ft difference?!

Ive had the VR6 MAF on the car for about 6k miles now, ive not had the AFR read so dont know really if its still within safe limits, but i do drive the car hard, (80 miles a day) and its still running?

[avants2turbo]

I would assume you are refering to my Avant Jason?

if so its not a stock map, its running the MTM remap

the car was RR at QST just after I bought it, with the stock MAF and it made about 280bhp/280lbs/ft

I then managed to put my finger through the MAF wire when i took the air filter out to clean it and so all I had spare was a OBD1 VR6 MAF, so bunged it on and i could instantly feel a difference!

The car was then RR at AMD in thurrock and the car made 295bhp and 324lbs/ft

now i know that different RR will always give different readings but 44lbs/ft difference?!

Ive had the VR6 MAF on the car for about 6k miles now, ive not had the AFR read so dont know really if its still within safe limits, but i do drive the car hard, (80 miles a day) and its still running?

UPDATE ON THIS

had the plugs out recently, to check compression, and they are pretty white, so this might be running to lean with the VR6 MAF

anyone checked the AFR?

[Rusty]

280ftlbs is stock ABY torque, sounds like they either didn't RR it and told you what you wanted to hear / what MTM quote or did it in a very low gear so that it then didn't build boost enough to get peak figures. Mine made ~ 324ftlbs on ~ 1.4 Bar boost in 4th and 280ftlbs with 1.0 Bar (stock) boost in 5th. It also made 280ftlbs with a boost leak and 1.2 Bar boost

As for the 15bhp difference, without having other cars on the same rollers it's difficult to tell whether the reading is accurate, different gears and guestimation methods could easily make this sort of difference. There was a Weston RR day a few years ago when all the cars were running rich, I think that was due to a leaking pipe that they were using

Only way to tell for sure is to do a back to back with an OE MAF and a VR maf on the same rollers on the same day with the same settings, conditions and operator. Or to do some GTech or GPS runs and get say 10 runs, average the data and have a look. 35-65mph times are the best for an S2 in 2nd IME.

Plugs should be light brown to white anyway, if it was running too lean then it'd det. and the timing would retard such that it would feel like you were 4 up, not 1.

[4WheelDrifter]

UPDATE ON THIS

had the plugs out recently, to check compression, and they are pretty white, so this might be running to lean with the VR6 MAF

anyone checked the AFR?

No sh*t. That'll be why it's running smoother.

[Jonas_R]

VR6 MAF sensor is around 200 euro from Audi in Germany, so roughly the same as the S2 MAF.

[cquattropower]

OK guys, so I need a maf for my aby if I go with the vr6 maf is that from a 2.8 golf or a 2.9 corrado? Has anyone got prooof that there is a difference? Does the vr6 maf plugin easily etc?

[A80Avant]

i have spotted a metal case on the german ebay from time to time saying that it is 90mm and its supposed to be like the VR6 maf size. 90mm though sounds a bit large , isnt it?

[avants2turbo]

OK guys, so I need a maf for my aby if I go with the vr6 maf is that from a 2.8 golf or a 2.9 corrado? Has anyone got prooof that there is a difference? Does the vr6 maf plugin easily etc?

The maf from the VR6 is the early OBD1 golf/corrado/vento with the 6 pin plug, and it plugs streight in, but this might not be what you want, as no one as yet has checked the AFR of a car running the VR6 maf, so it might be running dangerously lean! It made a very noticeable difference to my car, but thats with a MTM remap

[A80Avant]

if it is the same bore diameter,why would it be running lean?