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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.

View Poll Results: Which turbo to choose for 400HP in the 1.9TDI PD
Garrett GT2359V (from Mercedes E320CDI) 1 4.17%
Garrett GTB2260VK 2 8.33%
Garrett GTB2260VKLR (Ball Bearing Turbo) 3 12.50%
Garrett GTB2566VK 4 16.67%
Borg Wagner S356 5 20.83%
GTB3576KLNRV 4 16.67%
Other? (Which One?) 5 20.83%
Voters: 24. You may not vote on this poll

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Old March 28th, 2017, 12:40   #61
eddie_1
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Quote:
Originally Posted by diffas View Post
I think TeroP had high reving PD, dont't have the dynosheet to give atm. Atleast past 5500 it was revving fine. It's about how fast max. HP is dropping. If you have 350hp @ 4500rpm and 340 @ 5500rpm, thats not bad even the curve is going down. I wouldn't call 1.9pd widebanded as stock, not far from 2000rpm. :P
Hi, how did you improve VE on your 4B at high revs? MAF upgrade? It's cool how you got power at high revs.
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Old March 28th, 2017, 12:56   #62
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umm ... 4B?

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Originally Posted by eddie_1 View Post
Hi, how did you improve VE on your 4B at high revs? MAF upgrade? It's cool how you got power at high revs.
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Old March 28th, 2017, 13:02   #63
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umm ... 4B?
Sorry it was A6 terminology 4B generation prior ~2005. 2,5 TDI is on 4B generation A6. I know you upgraded turbo, wondered if you also were getting enough air in.
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Old March 28th, 2017, 13:08   #64
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We are generally in agreement.
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I am not talking about 1000-2000rpm as absolute values, I'm taking about the useful powerband range from surge limited max boost pressure to peak power RPM, eg 3700-4700=1000, 3400-5400=2000.
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Approx >300bhp 3500-5500rpm
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Old March 28th, 2017, 13:10   #65
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This graph has an increase of 30bhp from 4600rpm to 5300rpm

This one does drop, but only by around 30bhp from 4600rpm to 5400rpm.
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Old March 28th, 2017, 13:11   #66
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Yes but still where that 4B came? I've never had one and probably never will. :P
B5 for life. I did basic head cleaning/porting, upgraded valve springs, bigger turbo and deleted maf around 6 years ago. :P Non vnt turbo S200/K27.

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Sorry it was A6 terminology 4B generation prior ~2005. 2,5 TDI is on 4B generation A6. I know you upgraded turbo, wondered if you also were getting enough air in.
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Old March 28th, 2017, 13:25   #67
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Quote:
Originally Posted by diffas View Post
Yes but still where that 4B came? I've never had one and probably never will. :P
B5 for life. I did basic head cleaning/porting, upgraded valve springs, bigger turbo and deleted maf around 6 years ago. :P Non vnt turbo S200/K27.
Thanks for the info. In Germany the A6 generations are more typically referred to as 4A, 4B(2,5 TDI), 4F and 4G, although also referred to as C4 through C7.
You can see here:
A6WIKI
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Old March 28th, 2017, 17:18   #68
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That was my hot tune lol when the car was a daily I have a 20psi smoke free tune.
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