a3 1.9tdi

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Ricky Beaumont

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so i bought a diesel 8L and i've just started to mod it and its my first real project car tbhand i need advise. i read a thread earlier on a 1.8T mod "to do" list and it gave me some good advise but i need more specific advise I.E. for a diesel. so far i've got a ram air induction kit fitted and a decat custom built exhaust with a s3 twin tail pipe (sounds really loud and deep) i've just bought a DV for it but i read after said purchase that a DV will make a diesel lose power cos of the lack of throttle body is this true? also can i still fit a K03s to a diesel? and if bought brand new, are turbos manifactured for diesel/petrol specifically? and i'd appreciate any other sound advice and also links for decent online shops to purchase said items.
thanks a lot guys
Car
 
Dervs don't have DV's or a throttle....

You can't fit a K03s to a derv as VAG PD engines use VNT turbos not wastegated turbo's (as well as physically not fitting)

I'd walk away from reading up on 1.8t tuning as its totally different in the oil burner world...

<tuffty/>
 
<tuffty/> said:
Dervs don't have DV's or a throttle....

You can't fit a K03s to a derv as VAG PD engines use VNT turbos not wastegated turbo's (as well as physically not fitting)

I'd walk away from reading up on 1.8t tuning as its totally different in the oil burner world...

<tuffty/>
Click to expand...
ah right so what would be the next turbo to upgrade to be? i was told that the tdi's use a ko3 turbo...
 
Ricky Beaumont said:
ah right so what would be the next turbo to upgrade to be? i was told that the tdi's use a ko3 turbo...
Click to expand...

lol... no... they don't... most use garret turbos... a turbo is arguably a turbo but you need to get the right one suited to the engine and fitment else you will be in uncharted ground...

Its a little more involved than fitting a bigger turbo IIRC... power is derived from adding fuel on dervs... bigger turbo is used to support the extra fuel to keep EGTs sensible and increase torque...

This section is pretty much exclusively 1.8t petrol engines as this is the most popular engine choice for an 8L

I believe some people look at using the turbo from a PD150 engine and injectors to suit then mapped up but couldn't tell you what other stuff you may need...

There is a derv section on the forum... you can try there... failing that Darkside Developments are TDi tuning specialist and know their stuff when it comes to turbo swaps and should be able to advise... can try here too... http://forums.tdiclub.com/index.php

...have had a look there myself for my A2 TDi..

<tuffty/>
 
i've been talking to darkside development and they told me they would put a pd150 amongst some other stuff to get easily 180bhp which is 80% increase on the standard. just need to raise the funds now cos its guna be about 2k lol
 
This is only my opinion but you have to ask yourself, is it really worth it? Is it not better/easier to just buy the 'correct' engine in the first place?

My old Fabia VRS, with the 130bhp PD engine threw out 182.7BHP on its best pull on the (perhaps slightly optimistic) dyno. That was with a cheapo generic £150 remap.

It was a **** map, and the car was practically throwing coal out of the exhaust, but it went like the clappers and never gave any problems in the 3 years I knew the car. Hence spending £2K+ just seems madness to me.

All in my opinion obviously.
 
get yourself a blacksmoke remap... http://blacksmoke.co.uk/ cheap as chips and nothing over the top... I have one on my daily A4 avant Quattro and it's great so in the lighter A3 I would imagine it would fly... whilst you can go down the route of bigger turbo's etc it's just not really worth it... Darkside are good though so it's up to you
 
Hi, i have just tunned exactly the same car as yours with a bv43a turbo off the 2.0 CR Tdi 170 Bhp engine, downpipe modified to suit, alloy boost pipes with silicone bends, alloy intake pipe modified to fit new turbo,1.8T pancake pipe, braided drain pipe, and much more... car goes well and has lots of torque even on stock pd100 injectors with just a map to suit. Next it will need a full alloy intercooler, 3 Bar map sensor and a clutch...
 
1+ for blacksmoke remap.
~30kw for 45 quid.

I find hardware mods performance/money ratio is just not worth it unless you really love your car.
 
are the black smoke remaps reliable though... like what if you **** it up? £45 just sounds too good to be true tbh
 
adamss24 said:
Hi, i have just tunned exactly the same car as yours with a bv43a turbo off the 2.0 CR Tdi 170 Bhp engine, downpipe modified to suit, alloy boost pipes with silicone bends, alloy intake pipe modified to fit new turbo,1.8T pancake pipe, braided drain pipe, and much more... car goes well and has lots of torque even on stock pd100 injectors with just a map to suit. Next it will need a full alloy intercooler, 3 Bar map sensor and a clutch...
Click to expand...
with the bv43a turbo, is it plug and play?
 
Ricky Beaumont said:
are the black smoke remaps reliable though... like what if you **** it up? £45 just sounds too good to be true tbh
Click to expand...

First you need to know your car is healthy: log MAF, injectors, measure compression, check turbo play etc.

Then

Buy ebay MPPS cable, download free software or included with ebay purchase ( works only on windows xp - you can create virtual one assuming you get USB working )

Backup your current ecu (this verifies that you can read your ECU).

Send it to Blacksmoke and receive tuned one.

Put your car on battery charger and reflash ecu.

Done

Enjoy +30kw for 45 quid. I even got EGR delete for free :D
PD engines should get even bigger gains.

MPPS has failsafe where it only overwrites data that has values changed. Also it does backups of blocks it's overwriting.

For the quality i literally see no smoke while accelerating while i can totally feel the increased torque, Been half year since remap and car is still very healthy. Even standard Clutch shows no signs of slipping.

Here's a picture how i map mine:
wKu4MY3.jpg
 
Last edited:
Nope, the transverse
Ricky Beaumont said:
with the bv43a turbo, is it plug and play?
Click to expand...
Nope, the transverse bv 43 has integral manifold with different flange, you need the longitudinal bv 43 which is separate but wil require a manifold I'm order to fit...
 
Because a bv43 is better I'm every respect, surges less and has better trim billet compressor and inconel shafts so it can deal with higher egt...
 
What makes you think that ? I would have a Garrett over a kkk any day of the week , the 150 turbo would be more than good enough for a non pd engine .
 
The bv43 is 10 years newer technology and designed to work on dpf equipped cars...do not confuse it with the kp39 turbo...
 
10 years newer doesn't mean better ,
You are running this on a non pd ?
What nozzles are you running ?
What boost ?
 
Bv43a is designed for the new cr engines, will sustain 1.7 bar of boost, picks up faster than the gt1749vb and can cope with higher egt and surges far less as well. Trust me with turbo technology is better to keep up with times...
curtis11 said:
10 years newer doesn't mean better ,
You are running this on a non pd ?
What nozzles are you running ?
What boost ?
Click to expand...
I have fitted the bv43a to 2 cars: a vw golf mk4 gt tdi 110Bhp and a 2002 audi a3 1.9tdi PD 100 Bhp. Both cars were stock bar the a3 which has a straight trough exhaust and induction filter (doesn't do naff all but it was fitted by the previous owner)...
A pd 150 (gt1749vb) is not superior to a bv43a. I also fitted a garret gtb1749vc to a gt tdi golf mk 4 and whilst ok it doesn't work any better than a bv43a... trust me i have tried them all,
 
You have me intrigued with the bv43 but to be honest I can't see it being worth the bother unless you are going to tune the car to see what the limits of the turbo is
 
To be honest lower EGT, minimal surge and enough mid range/top end punch with potential for 220 Bhp with supporting mods is pretty good in my book !
Only turbo i would put on a 1.9 Tdi that spools similar to the bv43a is the gtb2056vl from volvo ! It spools quicker than a gtb1756vk, surges less and has enough potential for 250Bhp !
Turbocharger technology has moved a lot in the last 10 years and now GTC series are packing a punch but they ride the surge line and are at the top of efficiency map due to reduced emissions !
 
Where abouts are you ? I can do all the above for you no problem including mapping...
Best would be a turbo and a remap, injectors can flow enough fuel for 180 Bhp but upgrading to pd 150 injectors will make it worthwile. You will need a new intercooler, a new pancake pipe and stronger boost pipes with clamps. Exhaust is fine for your level of tune...
 
i'm in leeds mate, am i right in saying these have SMIC? could we put a front mount on? how much we talking
 
Yes, a fmic is fine however not entirely necessary- it makes good pub talk though ! Factory stock intercooler is fine for about 170-180 Bhp however with high boost they are likely to come apart at the seams so a fully welded alloy intercooler is required... A turbo kit, pancake pipe, alloy boost pipes, alloy pd150 intake pipe, oil drain, turbo flange and odds and sods required will set you back about a grand. I would only upgrade intercooler if you go over 1.5 Bar of boost however i doubt you will need that much without clutch complaining...
 
Shame OP hasn't a 130 PD , 2.5" exhaust or exhaust mods and 180 bhp with just a map .

Always get the higher output if you can .

Like people who turn their SE into an S-line.
 
Gazwould said:
Shame OP hasn't a 130 PD , 2.5" exhaust or exhaust mods and 180 bhp with just a map .

Always get the higher output if you can .

Like people who turn their SE into an S-line.
Click to expand...
From a performance point of view your sentence is sound however cheaper insurance, lower fuel bills and the satisfaction you get tuning the car along the way makes it all worthwhile ! If we all could afford a lambo then it would seem pointless but when you get 100% power increase from an engine just with a few bolt on mods then by all means...
 
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