can i say, that after my Golf !.8T was chipped at Jabbersport it didn't want to rev above 4000 rpm in 3rd gear, I was told it was the ais flow mass meter at fault, so after buying a very expensive replacement part the car was just the same, so when i took the car to a garage in Chesterfield, where i paid to have the Jabba chip and carrier replaced and a Revo programme installed, which cured the problem and pulled strongly in every gear and was a lot more economical but the problem didn't stop there, the guys at Jabba advised me and fitted a dump valve which caused the NEW air flow mass meter to clog up, so with a Revo programme and minus the dump valve and Jabba's own induction kit (also very expensive) the car is running spot on. And I've also purchased a AUDI A3 1.8 t Quatro which as visited the said Chesterfield garage for a revo and with NO flat spots or fault codes unlike Jabba it pulls like a train

Welcome on board golfgti18t..

Always good to have a different VAG opinion on things, thanks for your input.

Welcome on board golfgti18t.

Ditto

Always good to have a different VAG opinion on things' date=' thanks for your input.[/quote']

welcome to the forums.

was your car like that straight after jabba, or did it gradually appear. no offence, but if it was there straight after, i would have gone back. and if it wasnt straight after, dont belive it could be attributed to a Jabba remap. the only thing that would stop the car revving would be it switching to limp mode which can either be a faulty MAF, N75 or DV.

but glad youve got your car sorted and are happy with it, what kind of figures are you putting out with Revo, and do you have any power graphs you can post?

Col G

can i say, that after my Golf !.8T was chipped at Jabbersport it didn't want to rev above 4000 rpm in 3rd gear, I was told it was the ais flow mass meter at fault, so after buying a very expensive replacement part the car was just the same, so when i took the car to a garage in Chesterfield, where i paid to have the Jabba chip and carrier replaced and a Revo programme installed, which cured the problem and pulled strongly in every gear and was a lot more economical but the problem didn't stop there, the guys at Jabba advised me and fitted a dump valve which caused the NEW air flow mass meter to clog up, so with a Revo programme and minus the dump valve and Jabba's own induction kit (also very expensive) the car is running spot on. And I've also purchased a AUDI A3 1.8 t Quatro which as visited the said Chesterfield garage for a revo and with NO flat spots or fault codes unlike Jabba it pulls like a train

James, it looks like you have been busy !!

What were the comments from JABBA ?, Did you get a refund, Did they give any reasons for the problems ??

Interested to hear the reasons given !

:yinyan:

Graham

Probably like everyone else I think I'm smelling a rat here. Sorry if I'm mistaken but a comment from James would be nice.

Probably like everyone else I think I'm smelling a rat here. Sorry if I'm mistaken but a comment from James would be nice.

You're a suspiscious soul....

I was too late with the PM! :llol: :llol: :llol:

I was too late with the PM! :llol: :llol: :llol:

And before anyone points the proverbial finger (Mellow) no it's not me. :p

Des

I never thought it was you Des ..................this time

Could someone please explain to me, preferably in words of one syllable, how a dump valve could cause a MAF to clog up? And clog up with what? And why would Jabba's remap restrict revving in third only?

What year is your Golf 1.8T, Golfgti18t, and what engine code?

sounds odd to me! why are so many people intent in bringing jabbas work down?

Not going to get into the "my remaps better than yours" debate. If you're happy with what you got then that's all there's to it.

More than happy for people to highlight any genuine problems they've had; it all adds to thwe knowledge base.

Bit mystified with the MAF problem though. Generally speaking the 1.8T MAF is as fault prone as the OEM DV except a whole lot more expensive. The only other MAF probs come from inductiion kits using filter which have been over oiled and cause MAF to be clogged up. MAF is also quite delicate and any bashing of it will probably break it.

sounds odd to me! why are so many people intent in bringing jabbas work down?

Because "they" are trying to push Revo .......................but we're having none of it !

Jabba rules OK !

Could someone please explain to me' date=' preferably in words of one syllable, how a dump valve could cause a MAF to clog up? And clog up with what? And why would Jabba's remap restrict revving in third only?

What year is your Golf 1.8T, [b']Golfgti18t[/b], and what engine code?

Gimp! That's a one syllable word isn't it and I don't mean you Denis.

Des

I have just been reminded by a post in another thread that the DV sits downstream of the MAF............ :confused:

I have just been reminded by a post in another thread that the DV sits downstream of the MAF............ :confused:

Maybe the wind was blowing in the wrong direction that day

if you read the post you will find it says he fitted a induction kit,

do you think this is what he means,as induction kits are the cause of most mass problems!!!

James,

As you fixed the car, can you fill in the missing gaps ??

As Everyone Is Aware Dump Valves And 20vt Engines On Vag Ecu

Get On !!!

As For The Mass Problem See Above Post.

N75 can be an issue, APR took massive flak for this in the USA, n75 is better now problem fades away. Perhaps not related but a point to remember.

There is some concern that we are collating information on over any induction kit that is oiled and the MAF. The connection you make with the DV is not so simple as it has been explained to me like this:

Because the MAF/ DV is all recirculating the MAF is getting subjected to stress fatigue if you like of air under great force (maybe greater than stock DV/airbox, think about it), this blowing, change in airflow direction is adding to fatigue in mafs...

Again this is reported to me by a non-skoda owner, VAG tuner and owner of several 20V cars. It did not occur atall on not recirc MAF implementations. There is no direct link to oiled induction kits as the maf is a hot wire and burns most impurities off, except perhaps an over oiling of a filter.

I hope this helps, certainly not the end of this exciting new debate, but a little more heads up and ideas to discuss, which is what we have here.

For the record, I'm happy for people to solder in my ECU board, i'm happy to test ideas and new toys, pay alot and expect issues. APR did mine and I got the n75 issue. lived with it and moved on, it's working now as if by magic, maybe more right foot loosening it all up.

What we crave is full informational descriptions, more info on what the problem was please.

Edit to clairfy.

This is a possible fix that is being researched by a tuner to escape the recirc system. As per Josh, below. Not suggesting you actually try this.

A possible fix is to use a DUMP to atmosphere valve and other bits to do away with the VAG DIVERTOR Valve (DV), leaving airflow unidirectional over the maf. But as far as I know this is not implemented yet, unless you have done? In which case how's it done and worth doing?

I'll come in and add my 0.02

to who ever is taking the time to read this can i say that having robbed my savings and buying an rs octy the best thing i ever did was have my ecu remapped by a very nice man. g force like you would not belive when you put your foot down. smoothness just like silk. increased mpg putting some money back in the bank. pure perfect programing by experts. carry on the good work i would recomend revo every time.

dave

The "Induction kits kill MAF's" thing is way way over stated.

Many many (sadly) totally stock VAG cars are having MAF failures. They are the latest VAG 'coil pack' type failure. They are fragile devices and vibration is a big killer of them, which coincides with more diesels suffering MAF deaths than petrols. IMHO..

Over oiled, over coated induction kits which allow this coating to be drawn out of the filter element can coat the MAF's. Most don't allow oil to be drawn out of them, and some are better than others... (resisting temptation to plug here :p )

Dealers will 99% of the time use their 'get out of jail card' when they see a faulty MAF on an after market inducted car. "Warranty Void sir on that item as the induction kit is to blame sir"... cRok!

There is a whole heap of engine oil/fumes in the induction system if you look. Crank case venting and the DV venting blows this about all over. You will be surprised just how much oil resides in your intercooling pipework for example.

MAF's are a known to VAG problem, and in the USA VW of America have extended their warranties to cover this part for 7years, such is the failure rate and customer dissatisfaction. Same kind of MAF's as we have I believe. We get fobbed off and they get warranty replacements.. make of that what you will.

Recirculating Dump Valve is std on the car from VAG. Atmo Dump Valves (the wooshy ones you here on Scoobies and RS's, well modded ones :p) do not run will with the 20VT's engine management system, as it see the atmos DV as a leak.

DV's are recirculating or atmospheric. Both are DV's tho.