90 or 110

1613gary

Guest
hi all
i have a tdi mk1 leon not sure if its 110 0r 90 bhp its a y reg registered in jan 02
its on log book as 110 goes like a 110 it has elec mirrors and 4 elec windows as its the
se model but no air con or climate.
heres my doubts on auto data gives my eng code ahl as a 90
i was on ebay looking for a gearbox and mine is the same as a 90 bhp golf (egr)
any ideas!!!!!!!!!!!
 

Muttley

Catch that diesel!
Mar 17, 2006
4,987
31
North Kent
Y reg is 2000-2001.

ALH (not ahl, ahl is a 1600 petrol engine found in VW Passats) is a TDI 90 engine with a variable-geometry turbo, like the TDI 110's. My guess would be that it is only the ECU map that makes it 90 bhp rather than 110. EGR gearbox is associated with it.
 

Skint

Because i'm worthless..
Dec 7, 2008
92
0
On the A281
Does it have the 'tdi' badge remaining on the boot?
If so, if the 'i' is in red it'll be a 110, if the 'i' is silver like the 'td' its a 90.
 

downrodeo

Active Member
Apr 12, 2009
75
0
West London
Y reg is 2000-2001.

ALH (not ahl, ahl is a 1600 petrol engine found in VW Passats) is a TDI 90 engine with a variable-geometry turbo, like the TDI 110's. My guess would be that it is only the ECU map that makes it 90 bhp rather than 110. EGR gearbox is associated with it.

Don't think it's just the map, although there are a lot of similarities between the two. My reaeson is that a remap of the two comes up with siginifactly different results in power.
 

Fl@pper

Back older greyer and less oilier but always hope
Jun 19, 2001
12,368
25
Gloucester
thats why i listed that way round, there are more codes for both engines and trans just taking 2003 for example

:90bhp:
AGR
ALH

:110bhp:
AHF
ARL
ASV

:130bhp:
ASZ
 
Last edited:

Muttley

Catch that diesel!
Mar 17, 2006
4,987
31
North Kent
TDiLeonMike wrote

Aren't AHU and ALH almost the same, diffrence between 90 and 110 is the turbo, fixed geometry in the 90, variable in the 110

ALH is different to the other TDI 90 engines in that it also has the variable geometry turbo, just like the TDI 110. Maybe there was a need to keep building TDI 90 cars for marketing reasons, or to use up the other components: the gearbox, for instance, is not the same as that found on the TDI 110.
 

FSiLeonMike

Barmy Army Reservist (TA)
Apr 26, 2007
1,303
0
Bury St Edmunds/Stowmarket-ish
TDiLeonMike wrote

Aren't AHU and ALH almost the same, diffrence between 90 and 110 is the turbo, fixed geometry in the 90, variable in the 110

ALH is different to the other TDI 90 engines in that it also has the variable geometry turbo, just like the TDI 110. Maybe there was a need to keep building TDI 90 cars for marketing reasons, or to use up the other components: the gearbox, for instance, is not the same as that found on the TDI 110.

Well, I have an ALH engine, and if I have a variable geometry turbo, might explain why i've wrung nearly 135bhp out of my 90 ;) :) :funk:
 
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