Better fuel mpg - vr6 turbo

[Silverback 0]

If you get a aftermarket standalone ecu i know you can have different maps, i.e. Low boost, high boost etc, but is it possible to have one map purely for fuel economy? Is there anything else i can do to improve it? Other than remove the turbo.. Lol

[pops 1]

a turbo if driven carefully should give better MPG, i had a 355bhp 20vt mk2 on standard management with 440 injectors that gave better mpg than my standard 180bhp a3, i can`t say wot stand alone management would do for MPG depends on wot sensors it uses, on the other hand if you want 400bhp expect it to drink petrol, my mk2 vr6t can use 30litres in 10mins and fueling is spot on

[VR6Will 0]

if your worried about fuel economy get a diesel

[xyber 1]

if your worried about fuel economy get a diesel

hahahaha dont turbo a VR either

[Bobtrude 0]

Mine is ok in city, and ok on highway. _Just a tad more than without turbo.

[Phat VR6 3]

Mine is ok in city' date=' and ok on highway. _Just a tad more than without turbo.

[/quote']

Whats that then.. Just driving it before the turbo kicks in?

[Bobtrude 0]

thats right. but driviing with boost isnt the same as stock;).

[Bobtrude 0]

But its also much stronger than stock when not boosting. . . . . . When are u going to turbo yours? Look forward too it!!!! Its Great.

[VR6Pete 1,455]

LOL. I love these threads...

Why buy a VR6, and then turbo it and worry about MPG?

Take the turbo off, sell the car and buy something else if you want a more economical car.

[goonersteve 0]

^^^^^^^ as the man says, i don't get it?! It's like going on holiday to Jamaica and asking for the area where its coolest temperature!!

[FishWick 21]

If you get a aftermarket standalone ecu i know you can have different maps' date=' i.e. Low boost, high boost etc, but is it possible to have one map purely for fuel economy? Is there anything else i can do to improve it? Other than remove the turbo.. Lol

[/quote']

TBH, you don't need 2 maps if the off boost fuelling is setup properly. With a standalone, you can of course make the off boost areas in the map as lean as you like, but that can often lead to poor performance, in which case a standalone will be of no benefit to you.

As the others have said, accept the sacrifice in economy and enjoy the car :-)

[e12_mat 0]

I dont think there is anything wrong with having a fast daily driver that can still get good mpg. My mk2 20v can go fast when needs be but on a long motorway journey it still gets more mpg then my old 8v did.

[VR6Pete 1,455]

bit of a difference when you have a 2.8 litre "V6" with a turbo though..

[e12_mat 0]

yer, i was talking about the principle. Shame a car cant be fast and good on fuel. :-)

[Bobtrude 0]

Its good to know how much its gonna use anyway IMO. I wondered about this aswell. In the end my Vr6T uses just a tad more in citydriving if you stay off boost. BUT if I want to I can empty the tank real fast and practically live at Shell.

So if u want good MPG there really isnt a way to acheve this with the vr6, turbo or not.

[antone28 0]

Ive just turboed my vr6 , and the car is deffinatley more economical on my daily 50 mile trip to work and back.

[Bobtrude 0]

By the way, is there any way to make the mpg meter in the car "work" for us turbo guys?

[Phat VR6 3]

But its also much stronger than stock when not boosting. . . . . . When are u going to turbo yours? Look forward too it!!!! Its Great.

When im abit older (21 now) and when got some more cash.. I want one so much tho.. Realy tempted to a loan lol... My problem is self control I know when ive got one ill just keep filling the tank and going into my overdraft. Oh well its getting done anyway. Hopfully this time next year and ill be bolting a turbo in

[Bobtrude 0]

I see what u mean with the loan, but I wouldnt recomend it because there is so many unforseen problems that may occur. I had my turbokit on the shelf tor TWO years before i had the money to put it on. . . . . . . That was horrible!. I got mine on when i was 22 so guess thats the magic number:).

[FishWick 21]

1.8T's run lambda 1 through the entire rev range and have a far more sophisticated ECU than VR6s do, plus being a small engine with small turbo, is not a fair comparison.

VRTs can be economical, just depends how the map is written. I see a lot of VRTs running 10.5 to 11 AFR on boost and open loop. There really is no need to be so rich. Using full closed loop throughout and more sensible AFR targets will definitely help with economy.

Due to the compression being lowered, you can throw on a lot of ignition advance off boost to restore throttle response.

To get the MPG meter working on the MFA, you would need to recalibrate the computer because it works it out from injector pulse rate.

[Bobtrude 0]

who could do such a recalibrationdo you think? VW?