1.4 tdi tuning past phase 1 remap/ tuning box

Hi,
I wondered if anyone had experience of modifying the 3 cylinder 1.4 tdi pd75 engine past remap or tuning box?
I am talking about larger pd150 injectors and turbo, adapting the exhaust manifold, front mounted intercooler as well as wheel, brake, exhaust/ egr and suspension improvements.
Looking for at least 150bhp and 260 lb ft torque!

Best wishes

Ian

timbotdi said:

Have you contacted Allard?

Product list, here:

http://www.allardmotorcompany.com/pages/products/products-all.asp

Contact details, here:

http://www.allardmotorcompany.com/pages/information/contact_us.asp

T

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Hi,
Yes, I have contacted allard I have to take the car in for them to assess the possibilties.
I think Allard is the way forward!
Still not sure how they would adapt the exhaust manifold to fit vnt 1749 turbo

Ian

turbo type

basstard said:

1.4tdi turbo is a GT15 by garrett, non vnt, so you just can't put a vnt turbo in there cos the ecu won't be able to manage it. So you could fit a bigger normal turbo [likely to cause big lag on such a small engine] or you could change the ecu but that would be crazy cos you'd need to do recode everything,,, I'm pretty sure tou can't use your stock ecu to manage a vnt turbo, but then maybe some ecu nerd has found the way you never know.

really depends what car is that imo, revo do a 109hp remap and if we're talking the likes of a lupo/arosa or a 99/2002 polo [smaller than the last two series] I'd say that's quite good,,,

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Hi, There has been quite a lot of discussion on the arosa/ lupo forum as to what type of turbo the 1.4 tdi uses.
The majority of users report vnt 15 which i think is used in the 1.9 tdi pd100 engines?

Ian

Hi, so my previous car - lupo tdi 2002 - didn't have vnt?
The GT1749VA is not vnt?
This turbo is limited to constant 1.6 bar which would limt the power to around 145 bhp.
In terms of the manifold do you think it would be possible to remove 1 branch or to fit an adapter?

Thanks

ian

Hi, Thanks for the post mikey - would you know if it has an n75 valve?
The head is 2 valve per cylinder.
Why is it if you read the tdiclub posts they hate vnt turbos on diesels in the usa?

Thanks

Ian

Hi, my avatar shows the 1.4 tdi turbo and exhaust manifold.

basstard said:

Problem is I don't think the 1.4tdi has the same valve that's used on the vnt's as a N75,,, I mean, one is substantially an electronic controller for the wastegate [which operates in two modes: open/closed], the other is and electronic controller for the vnt mechanism which moves the vnt blades from low rpm position to high rpm position [and I mean turbo rpm] with everything in between,,,

I've never heard of such a conversion and I don't know if it's that easy as you say,,,

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Hi, If you click here it will take you to kerma who sell N75 valve turbo pressure converter

Devonmikey, i wanted to cast a wide net for information so that I could be informed - nothing more.
At the end I trust Allard's to tune reliably and within the limitations of the car!
Money wise, i think a budget of 6k, includes 2.5 - 3k for the car and the same for mods could squeeze in some extras such as wheels, brakes, suspension, lsd etc.
The engine tuning should be relatively less costly - pd130 injectors, adapting turbo internals, fmic, remap - as opposed to race injectors, vt5 turbo etc.
The arosa idea is based around the colin chapman/ lotus concept - less is more!
Should be a hoot - like a go cart

Apologies for any duplication but I find these forum a good source of info - such as contributors such as yourself, and am particularly interested on your parallel turbo project.

Ian

devonmikeyboy said:

@watkins4378 Don`t you just love car forums with all the conflicting information you get on them. I exspect you are more confused now then before you started this thread ( plus the one on Briskoda ) since i sure am. I should think that you are looking at spending more then 2-3K on mods to get to 150bhp when you count in a new clutch plus the brakes and suspension will still need upgrading the list is endless.

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