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Go Back   TDIClub Forums > VW TDI Discussion Areas > TDI Power Enhancements

TDI Power Enhancements Discussions about increasing the power of your TDI engine. i.e. chips, injectors, powerboxes, clutches, etc. Handling, suspensions, wheels, type discussion should be put into the "Upgrades (non TDI Engine related)" forum. Non TDI vehicle related postings will be moved or removed. Please note the Performance Disclaimer.

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Old August 5th, 2016, 12:09   #1
K Brondbjerg
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Join Date: Jun 2016
Location: Denmark
Red face Strange BV43 turbo performance - suggestions?

I upgraded my Passat 2003 Limousin PD 130 AVF with a P&P BV43 turbo part number 03G145702H / engine codes BRD and BVA
I ordered one of the best performance-pros in Denmark to chip my car, but he toeld that the boost pressure was weak by 2000 rev, and first hit max. pressure 1,5 - 1,6 bar by 2500 revs. :-( - see picture below.
The Nm. is also strange between 2.500 and 3.500, and it is not the same figure every time?

He toeld me that it might be a old katalysator that must be exchanged and/or the BV 43 turbo might be faulty?
Any suggestions?
Ps. I run my car in limp mode (55 Ps) for 1.000 km. before chipping it.
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Old August 6th, 2016, 03:03   #2
Yucca
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Run VCDS Log file, channels 3,8 and 11. 4.gear, Wot, 1500rpm@-> limiter.

Last edited by Yucca; August 7th, 2016 at 12:55.
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Old August 6th, 2016, 14:16   #3
K Brondbjerg
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Thanks for the suggestion, I will follow up
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Old August 8th, 2016, 02:45   #4
K Brondbjerg
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Default Weak pump or untight hoses?

I have asked another mechanic, and he toeld me that he has often repaired untight systems or old pumps. There is also some times a kind of valve in between that some times need to be bypassed?
He has first time in a few weeks, but I will report back - Tanks for the help
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Old August 15th, 2016, 23:04   #5
Rub87
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170hp bv43 I find never spools really good. feels dead below 2k but shines at 2k5-3k5.
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Dyno'd area, Old VNT20 setup dyno'd 192whp
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Old June 10th, 2019, 02:49   #6
Ricsi168
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Hello guys!
Sorry to wake up an old thread,but i think i have got the same strange things!
My car is 2003 audi a4 b6 1.9pdtdi AVF quattro 6 speed manual
With:
Bv43 from 170pd
Front mount intercooler
Egr off
Cat off
Kevlar clutch
Vac system simplyfication
My problem is that i have got my vnt system setted who do things like this all day!My emap and imap is nearly the same (like imap=emap+0,5bar)
Car feels dead under 2000-2200rpm....
i read with this turbo you can get nearly 200hp,but my can feels like i have got no turbo...its not that strong
i can post my ecu files and logs if thats help!
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Old June 11th, 2019, 00:16   #7
Yucca
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How much EMP at idle? 0.2bar is good adjust for stop screw.

What is AFR level when turbo is spooling up?
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Old June 11th, 2019, 21:29   #8
adamss24
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You wont get that good boost response from a bv43, i suggest you get a bv43a cartridge and swap it in, it has a billet compressor wheel and an extra set of blades compared with the pd170 bv43. With a bit of adjusting the duty cycle and PID you can get satisfactory spool from a kkk bv43 turbo just dont expect wonders ! As others said they do shine in midrange...
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Old June 16th, 2019, 08:09   #9
Ricsi168
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Hello guys!
Yes i know about spool i dont want to spool as fast as 1749va but i think mine spools even worse i think i got 1bar at 2000 rpm.
At the moment i dont know about idle speed exhaust manifold pressure but how can i adjust the stop spcrew professionally ? At idle speed with watching emp adjust screw to read 0.2bar?
About the afr i dont know how can i check that from the software? I got a little black smoke when doing wot 3rd gear to 4000rpm.
And also rod lenght settings is question, with 4000rpm how much percentage is good to have in n75 readings i think now i got something like 74%
How can i check or adjust pid control?
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Old June 21st, 2019, 10:47   #10
bhodgkiss
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Mine pulls strong from 2200rpm ish
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Old June 22nd, 2019, 02:20   #11
Lucian189
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Gtc1549 īs Best for the money..
Ofcourse not p&p
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Old June 24th, 2019, 08:19   #12
Ricsi168
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Anyone has some suggestion how to reduce lagg below 2000rpm? Apart from turbo change.
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Old June 25th, 2019, 06:04   #13
Yucca
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Quote:
Originally Posted by Lucian189 View Post
Gtc1549 īs Best for the money..
Ofcourse not p&p
Hows that so much different? Both stock turbos from 170bhp engine.
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Old June 25th, 2019, 13:08   #14
Ricsi168
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Hello guys!

aT the moment im making an emp adapter and guge to read emp.
I searched on this forum about vnt stop screw setting i got some news, when the tester is ready i will check for(forum writes 0.2bar amp at idle,and at 2000rpm in neutral my turbo should make 2-4psi)
Any suggestions about or anything i should check too?
And an other question how much emp is bad when the vanes are closed and accelerate the car?
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Old June 25th, 2019, 16:17   #15
jimbote
 
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Quote:
Originally Posted by adamss24 View Post
You wont get that good boost response from a bv43, i suggest you get a bv43a cartridge and swap it in, it has a billet compressor wheel and an extra set of blades compared with the pd170 bv43. With a bit of adjusting the duty cycle and PID you can get satisfactory spool from a kkk bv43 turbo just dont expect wonders ! As others said they do shine in midrange...
swaps right into the pd170 bv43 exhaust housing? what about compressor housing ? thanks!
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Last edited by jimbote; June 25th, 2019 at 18:53.
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