RangeRovers.net Forum banner

1 - 13 of 13 Posts

·
LEGACY VENDOR
Joined
·
2,492 Posts
Discussion Starter #1
Hi,

A friend of mine has rebuilt a GEMS 4.0 with top hat liners, piper 285 camshaft, stage II heads and more...
It's obvious that stock ECM cannot cope with all those performance mods.

If i understood well :
-Mark Adams Chip is a bespoke chip with a longer range for every parameter in order to accept performance mods.

-Haltech Interceptor is a piggy back module that transform incoming and outcoming ECM signals in order to benefit of the mods but lure the GEMS as with a stock engine. That module is said to be user friendly programmable.


Prices are very similar but i understand that Haltech Interceptor allows much more mods than a chip but with many rolling road sessions.

Any help on this costly choice?

Regards

Florent
 

·
Registered
Joined
·
191 Posts
I had Mark Adam's chips in my 1998 4.6 before I rebuilt it recently. The rebuild is to 5.0 litre to stage three specifcations: high comp, fully ported and matched heads etc - the full monty - I spoke with Mark Adams prior to my rebuild about this issue - there is an upgrade chip/map for my circumstance post the rebuild which I have ordered from RPI. My understanding is that the GEMS will work fine with a situatiion such as yours. However, that understanding is not based on any technical understanding - I'm still at the uneducated enthusiasts stage! With mine, after the rebuild, once the adapative values were reset if was fine - predictably didn't like it before the adapative values were reset but believe you me if you drove it you would know that it handles it no problem. I wanted to know about this issue because it had been suggested to me that the rebuild would require a new engine management system - Wolf here in Melbourne was one that was suggested to me. It seems to me that that was not necessary.

There were some threads back in time - perhaps 6 months or so - about this general topic I think.

Regards

Andrew
Melb, Australia
 

·
Registered
Joined
·
191 Posts
I forgot to mention in my last post that before the rebuild I had a piper torque max camshaft.

Regards

Andrew
 

·
LEGACY VENDOR
Joined
·
2,492 Posts
Discussion Starter #4
The thing is my friend doesn't get power under 3500 RPM so he always need to kick it.
With a free flow custom exhaust, let me tell you that the beast isn't discrete around town.
 

·
Registered
Joined
·
191 Posts
As part of my rebuild I had to rebuild/upgrade the torque converter - I think/suspect for the reasons you describe?

I understand your comment about the exhaust - I think my neighbours understand even better!

Regards

Andrew
 

·
Registered
Joined
·
13 Posts
A chip provides an enhanced map and typically cannot be re mapped easily. Therefore if your engine chracterisitcs doesn't match the engine the chip was designed for you will not get the maximum benefit. The haltech full or interceptor (or others) can be tuned therefore offers benefits over dedicated chips as you individual engine chractersistics can be tuned to maximise performance, economy etc. I experienced a 30hp at the wheels from a haltech system and can vouch for it. Here are a few threads and discussiions
http://www.aulro.com/afvb/technical-cha ... ir-lr.html
http://www.aulro.com/afvb/technical-cha ... tor-3.html
 

·
LEGACY VENDOR
Joined
·
2,492 Posts
Discussion Starter #7
andyaa said:
As part of my rebuild I had to rebuild/upgrade the torque converter - I think/suspect for the reasons you describe?

I understand your comment about the exhaust - I think my neighbours understand even better!

Regards

Andrew
The thing is this one has a manual gearbox
 

·
LEGACY VENDOR
Joined
·
2,492 Posts
Discussion Starter #8
rdehaan said:
A chip provides an enhanced map and typically cannot be re mapped easily. Therefore if your engine chracterisitcs doesn't match the engine the chip was designed for you will not get the maximum benefit. The haltech full or interceptor (or others) can be tuned therefore offers benefits over dedicated chips as you individual engine chractersistics can be tuned to maximise performance, economy etc. I experienced a 30hp at the wheels from a haltech system and can vouch for it. Here are a few threads and discussiions
http://www.aulro.com/afvb/technical-cha ... ir-lr.html
http://www.aulro.com/afvb/technical-cha ... tor-3.html
Very interesting. Thanks a lot 8)
 

·
Registered
Joined
·
191 Posts
Hi Florent

I was thinking about fitting the Haltech Interceptor (somone recently sugested I might consider one) and I remebered this thread.

Did you ever go ahead with it and, if so, what happened with the performance.

Has anyone else had any recent experience of the Haltech Interceptor or similar devices.

Thanks


Andrew
 

·
LIFETIME CONTRIBUTOR
2002-2005 Range Rover MkIII / L322
Joined
·
5,427 Posts
I have an Interceptor in mine.

Here are the dyno graphs on petrol and then on LPG:





However, I'm told by another LR specialist (who was looking at something else on mine) that the Haltech installer hasn't remapped the ignition on mine to take advantage of the LPG. I may need to go back to ask about that.
 

·
Registered
Joined
·
191 Posts
Thanks Ron - I did see some of your posts on another forum.

To my untrained eye that looks like a subtstantial improvement?

Regards

Andrew
 

·
LIFETIME CONTRIBUTOR
2002-2005 Range Rover MkIII / L322
Joined
·
5,427 Posts
Yes, it does. I need to get another dyno run as it now has a Davis Performance Landys chip upgrade in it (on test).
 

·
Registered
Joined
·
191 Posts
I have asked aroud a few people I know and the Wolf V500 has been highly commended to me by someone who has used one in his Ranger in offroad challenges/safaris.

Anyone had any experience of this unit ?

Regards

Andrew
 
1 - 13 of 13 Posts
Top