Puma turbo upgrade

[cal415]

Hi All,
Looking at doing a few mods to my 130 before i head to darwin in july, I've got to do the turbo gasket and i am considering swapping the turbo out for a upgraded one from Alive or BAS while i am at it.

Has anyone done this mod in in Australia? I already run a Alive tune using an Atric device which works great so i am leaning more towards Alive at the moment.

Thanks,

Mick.

[Tombie]

It will need the remap changed so suggest sticking with what you know.

[MLD]

For what it's worth i'm led to believe that a variable vein turbo properly tuned is a more tactile modification than the hybrid turbos that were being sold as high performance. The little i know of the hybrids they work a treat up high in the RPM range but have a tendency to over fuel low in the range.

An example of a (TD5) hybrid turbo poorly tuned is the video of Stefan under the trip reports for Watagans a few weeks back. See from 9.40 min marker. Granted that Stefan's truck was a work in progress and the tune was not yet sorted but from the over fuelling i witnessed it will take some close attention to find the ideal.

MLD

[Tombie]

Your other option is a BAS VNT, remove your map on the Atric and sell the unit, then get the BAS tune with the VNT.

[cal415]

I guess it has yet to be done out here? no one has one??

Both Alive and BAS list there turbo upgrades as hybrid VGT Turbos, neither do VNT? im no turbo guru but the VNT vs VGT thing doesnt sound like there is alot in it with some good points towards going VGT.

[Tombie]

Sorry yes, VGT...

[cal415]

Ok so BAS haven't bothered to respond to me, alive has been slow in responding, 1000 pound for alive plus 500 pound surcharge if I don't return my turbo which sounds stupidly over the top, that's without any shipping.... I would really like to give it a go but the cost is crazy, anyone got an old puma turbo laying around they would let go cheap?

[fatman]

VGT and VNT isn't the same?
Variable-geometry turbocharger - Wikipedia, the free encyclopedia

As far as i understand uprated turbos for pumas are for getting more max hp - for low revs torque gain,i wouldn't be so sure..but i am no expert.
Ps
Do you happen to have any egt readings with the alive map?
I am hunting an issue on mine..
Thanks.

[cal415]

No EGT but had planned to do it with the turbo, as for vnt and Vgt, I never said they were the same?

From what I understand low down power remains pretty much unchanged mid to high revs sees a big improvement but I can't seem to find any real hard figures, neither BAS or alive show any dyno runs they just talk about peak power....

[fatman]

A fellow member (ZeDefender) on defender2.net fitted an upgraded turbo DEFENDER2.NET - View topic - BAS remap, intercooler and turbo maybe you can send him a message..
But since you also got a leaking gasket(like him - and many of us - DEFENDER2.NET - View topic - Why my turbo leaked ),he also had some initial issues with egt's?? with the new setup and then installed an egt meter and confirmed this DEFENDER2.NET - View topic - BAS remap and Allisport intercooler (10th post) you'd better contact him for infos.
Cheers.