Volkswagen Mark IV Forum banner

1 - 20 of 26 Posts

·
Registered
Joined
·
13 Posts
Discussion Starter · #1 ·
A sorta-kinda tuning question, but I figure it has general application so I figured I'd ask on the general board...

I've been looking for information on remapping/tuning a Bora Sport PD115, and ran across Upsolute's data sheets page at www.upsolute.com . The puzzling thing is that two Bora PD115s are listed; one is the "115 / 312" and the other is the "115 / 285". The important difference for me is that one is listed as tunable to 148Bhp, the other to 158Bhp.

Can anyone shed any light on the differences, engine- and other parts-wise (are the variants of the engines based on spec, age, how can you tell which one you have, etc...)?

Thanks

Nice Guy Mike
 

·
Registered
Joined
·
199 Posts
If im right in thinking then the more powerful unit out of the two is the one that had the 6 speed box attached to it. I myself found out the same thing today after reading upsolutes page looking at the remaps.

Im going to keep on looking for a the difference though as their is a significant benefit to the higher power remap.

Mart
 

·
Registered
Joined
·
13 Posts
Discussion Starter · #3 ·
If im right in thinking then the more powerful unit out of the two is the one that had the 6 speed box attached to it.
That's a possiblity. I'll keep looking around and post if I find out anything myself...

Nice Guy Mike
 

·
Registered
Joined
·
2,634 Posts
There was an absolutley hilarious thread a while ago about 'lost torques' - I think somewhere in that was an explanation.

Bit like the 1.8T v 1.8T thread.....[:D]
 

·
Registered
Joined
·
248 Posts
I posted this question when I was looking to get my upsolute remap to see if I could figure out which one I had.

Didnt get an answer for a change

Spoke to upsolute in the end and they told me they thought all uk
models are the 312NM one, either way thats the remap they used on my
car and it runs fine, yet to have it on a RR to see the actual bhp but
its good fun and I cant complain.
 

·
Registered
Joined
·
327 Posts
No there torque outputs (NM) the 312nm version has the 6 speed box as the five speed box couldn't handle the torque output which is why it is 285
 

·
Registered
Joined
·
13 Posts
Discussion Starter · #8 ·
No there torque outputs (NM) the 312nm version has the 6 speed box as the five speed box couldn't handle the torque output which is why it is 285
I've heard this from another source, too. Is it as simple as that, then? If you've got a 6-speed box it's the 312 engine and hence can be tuned a little more than a 5-speed box (and hence 285) car?

Nice Guy Mike
 

·
Registered
Joined
·
66 Posts
I'm gonna have to add my tuppence worth here. I'm sure some other forum member will fill in what I miss out. I have a GT TDI 115pd engine code AJM. max torque here is 285nm. It also has a 6-speed box as standard as do the later 115's, 130's and 150's. Just before the 130 came out the 115 was upgraded to meet EU4 emissions and had a max torque of 312nm. The 130 which superseded it also has max torque of 312nm. As far as I know, these later 115's were very rare, dunno the engine code off of the top of my head. In a nutshell though, most 115's out there will be the 285nm version. These are still very good engines and the only real downside I can see is the surging you experience at 2000rpm. This can be remedied somewhat by fitting the n75 valve from a 130 as detailed by Richard W in another thread. Search for 115pd N75. I hope this maybe clarifies things a bit.
 

·
Registered
Joined
·
176 Posts
didn't see this thread before I posted a very similar one. According to my detective work on ETKA, AUY is the engine code in question
 

·
Old Skool UK-MKIV member
Joined
·
1,594 Posts
I'm gonna have to add my tuppence worth
here. I'm sure some other forum member will fill in what I miss out. I
have a GT TDI 115pd engine code AJM. max torque here is 285nm. It also
has a 6-speed box as standard as do the later 115's, 130's and 150's.
Just before the 130 came out the 115 was upgraded to meet EU4
emissions and had a max torque of 312nm. The 130 which superseded it
also has max torque of 312nm. As far as I know, these later 115's were
very rare, dunno the engine code off of the top of my head. In a
nutshell though, most 115's out there will be the 285nm version. These
are still very good engines and the only real downside I can see is the
surging you experience at 2000rpm. This can be remedied somewhat by
fitting the n75 valve from a 130 as detailed by Richard W in another
thread. Search for 115pd N75. I hope this maybe clarifies things a
bit.
Your explanation sounds pretty good actually.

Someone else has posted another topic asking the same question, and I
was trying to find that funny topic that Richard was talking about, lol.

The engine code for "the other" 115PD engine is AUY apparently, although I doubt we'll see many of them.

Lee
 

·
Old Skool UK-MKIV member
Joined
·
1,594 Posts
The topic was called:

Did fritz lie to mr haynes? or is mr haynes thick?

Its in the engine and exhaust forum
 

·
Registered
Joined
·
3,956 Posts
Arhh, memories. The old Fritz vs Haynes thread !

AUY = VW Sharan

AJM = Golf / Bora / Passat / Beetle etc

I believe that is where / how the engines were used ?

I'm still missing that 20 odd n/m's of torque and am still gutted. Anyone found it ?

Seriously though, the question we should be asking and trying to find the answer to is; "What are the differences between the AUY and AJM ?

To hazard a guess I reckon it's to do with compression ratio's. The AJM is 18:1 whereas the 130 and 150 PD's are 20:1 and using the same thought process as above (rarer / later 115's etc) maybe the compression ratio was upped prior to the introduction of the 150. (note:- the 150 came first and the 130 was derived from it).

Except that theory is wrong as the AUY has been in the Sharan for ages....?

I'd certainly like to know how I could get my AJM 285 nm's up to the AUY's 312 ?
 

·
Registered
Joined
·
1,451 Posts
one way to know is to check on etka if AJM and AUY use the same turbo and injectors and if they do its probably due to the map on the ECU.

compression ratio on the 130 and 150 is 18.5:1, its funny though, the handbook for the cars state the 130 19.0:1 and 150 18.5:1 but its false the 130 was measured at 18.5:1, i reckon VW purposely do these mistakes in the book to make it look like engines are totally different
 

·
Registered
Joined
·
1,228 Posts
Arhh, memories. The old Fritz vs Haynes thread !

AUY = VW Sharan

AJM = Golf / Bora / Passat / Beetle etc

I believe that is where / how the engines were used ?

I'm still missing that 20 odd n/m's of torque and am still gutted. Anyone found it ?

Seriously though, the question we should be asking and trying to find the answer to is; "What are the differences between the AUY and AJM ?

To hazard a guess I reckon it's to do with compression ratio's. The AJM is 18:1 whereas the 130 and 150 PD's are 20:1 and using the same thought process as above (rarer / later 115's etc) maybe the compression ratio was upped prior to the introduction of the 150. (note:- the 150 came first and the 130 was derived from it).

Except that theory is wrong as the AUY has been in the Sharan for ages....?

I'd certainly like to know how I could get my AJM 285 nm's up to the AUY's 312 ?

So whats my AJZ then???

It is a Sept 2001 115 mind & I always thought it was as good as a 130 in std guise & whipped a 130 bad when I had a tuning box on.
 

·
Registered
Joined
·
176 Posts
AUY was also used in golf and Bora in 2000/01

AJZ doesnt seem to exist in ETKA altough as it is a mixture of AJM and ASZ would make sense to be a mixture of the two engines during the changover period.
 
1 - 20 of 26 Posts
Top