computer mods??????

QUIKXR · 14-01-2006, 03:48 AM

hello i have an au2xr8 and i want to know if the are any good computer mods than will increase my power and that is worth getting and if so what computer mod or computer???????
thanks

BOOSTDEF · 14-01-2006, 04:28 AM

get a unichip or chiptorque...

Casper · 14-01-2006, 10:18 AM

or an edit or the JMM interceptor...

Lots of options now

EvilChief · 14-01-2006, 11:07 AM

personally i like aftermarket ecus better ... not a big fan of chips :S

5 FTR 5 · 14-01-2006, 02:23 PM

Same,the edit works well,cold air mod and a decent exhaust for a good 35 plus kw's

xr8ute · 14-01-2006, 02:48 PM

Quote:

Originally Posted by EvilChief

... not a big fan of chips :S

Chips have a bad reputation, but what do people really mean when they refer to a "chip" these days? Of the four options mentioned, only one is a chip, and IMO is one of the better two options.

Unichip, CAPA Flash Tuner, JMM Interceptor, and Chiptorque J3 Chip are each different in the way the interact with the factory computer and affect the calibration/tune of the engine, not to mention each requiring different skills/experience of the tuner.

To answer your question QUIKXR, even if your car is practically stock, you will get a good gain from modifying the "computer". The AU V8's came with a hideously poor tune from the factory...very rich fuel at WOT and in some places too much timing and other places too little.

Is your car modified? Is your car an auto? Whereabouts do you live and how far are you prepared to travel to find a good tuner?

Answer those questions and we can help you narrow down the options a bit more... ;)

FPV8U · 14-01-2006, 05:36 PM

Go the Edit, people are getting some good results on AU XR8's with it

EvilChief · 14-01-2006, 07:26 PM

Quote:

Originally Posted by xr8ute

Chips have a bad reputation, but what do people really mean when they refer to a "chip" these days? Of the four options mentioned, only one is a chip, and IMO is one of the better two options.

my opinion is based on pesonal experience with "chips" or so called interceptors and my own experiences on remapping factory ecus as well as tuning aftermarket ecus

stockstandard · 14-01-2006, 08:45 PM

Im not a fan of interceptors, but chips are allright. Chiptorques and edits actually change the engines tune whereas Unichips/JMM Interceptors are hacks that bend a bad tune into a good one. Although some are technically better and some cost more than others, the tuner will have more influence over the end result, so find one you like and let them do their stuff.

Casper · 14-01-2006, 08:52 PM

Quote:

Originally Posted by stockstandard

Im not a fan of interceptors, but chips are allright. Chiptorques and edits actually change the engines tune whereas Unichips/JMM Interceptors are hacks that bend a bad tune into a good one. Although some are technically better and some cost more than others, the tuner will have more influence over the end result, so find one you like and let them do their stuff.

Actually, the JMM interceptor is not like a Unichip, it sits AFTER the ecu and contains its own MAP sensor and own tuning maps. It is closer to a seperate aftermarket ECU than a "piggyback" as it has no reliance on the ECU signal apart from telling it what the stock ECU is telling the engine to do and then overlaying its own signal to tell the engine what it wants it to do.

stockstandard · 14-01-2006, 08:56 PM

I thought the JMM interceptor was basically a combination of a fuel only stand alone ecu and an ignition interceptor.

If it works the way you said it does, then it is still an interceptor, it just sits on the other side of the ecu and overlays it maps on top of the factory ones (which would mean it would be slower than unichip right?)

Casper · 14-01-2006, 09:04 PM

Quote:

Originally Posted by stockstandard

I thought the JMM interceptor was basically a combination of a fuel only stand alone ecu and an ignition interceptor.

If it works the way you said it does, then it is still an interceptor, it just sits on the other side of the ecu and overlays it maps on top of the factory ones (which would mean it would be slower than unichip right?)

more like replaces the ECU ones. It can be set up to basically run its own tune, the only thing it needs from the factory ECU is the orignal signal to tell it what the factory signals are, it doesnt need them to "bend" them like a unichip. Unichips basically substitute one factory map setting for another that would be more optimal, jmm interceptor uses its own MAPS, the ecu simply tells it what the factory tune was going to do, it then replaces it with its own tune. It can quite happily tune boost to almost any psi, unichips cant on a non turbo ecu as there are no standard maps that are applicable. Anything after 8psi or so is compromised with a Unichip.

stockstandard · 14-01-2006, 09:11 PM

Quote:

Originally Posted by Casper

jmm interceptor uses its own MAPS, the ecu simply tells it what the factory tune was going to do, it then replaces it with its own tune.

If it replaces the factory tune then why does it need it at all? What sensor outputs does it read?

So with a JMM interceptor the coil packs are unplugged from the ECU and connected directly to the interceptor itself? That would mean it would need an in built EDIS 6 module like the ECU has.

Casper · 14-01-2006, 09:18 PM

Quote:

Originally Posted by stockstandard

If it replaces the factory tune then why does it need it at all? What sensor outputs does it read?

So with a JMM interceptor the coil packs are unplugged from the ECU and connected directly to the interceptor itself? That would mean it would need an in built EDIS 6 module like the ECU has.

Just going on what I've been told, dont know the mechanics of it at all. I guess I'll find out in a few months. I'm sure Brenden could explain how the interceptor works much more than I can.
Up to each individual how they want to tune their car in the end though, personally I'm not a fan of an edit at all, no real evidence of it working well for I6's yet. Unichips are old tech that have reached their used by date and total aftermarket computers are an EPA money pit.

stockstandard · 14-01-2006, 09:30 PM

well from what you posted in another thread

Quote:

The JMM Sequential tuner, unlike other interceptor units, takes complete control of the injection system in your vehicle to control the fuel injectors. In turn the ignition control system in the JMM tuner simply takes control of crank and cam sensors and allows us to manipulate ignition timing.

Which makes perfect sense to me. This product isnt made by JMM - its just a re-badged generic tuner so is designed to work with lots of different cars. When it comes to custom engine management driving OEM stuff, injectors are easy because there are only two types (low and high impedance), both work very similarly, and the electronics for both are also very simple. Ignition on the other hand is more difficult. There are so many different types of ignition systems out there, and many of them work in very different ways. This product gets around this my using the ECU to drive the OEM ignition setup (by imitating sensors like a unichip). So as I understand it, this product is the equivalent of an engine with ignition control via unichip and fuel by microfueler or similar fuel only computer.

Its technically better than a unichip, but its not going to be as good as a edit or stand alone ECU.

Casper · 14-01-2006, 09:39 PM

sounds reasonable but I honestly have no idea.

MNM96 · 14-01-2006, 09:53 PM

When is Brendan/ JMM back from Hols?

Casper · 14-01-2006, 09:54 PM

Quote:

Originally Posted by MNM96

When is Brendan/ JMM back from Hols?

they are back now

duaned · 15-01-2006, 12:08 AM

I did speak to Brendan and it seems eventually they ae looking at the edits later this year as a permanent replacement for the interceptor. And it makes sense, why alter a signal's output using another device after it to get an end result when the edit can do it straight from the source! I will post some results of the edit on Wednesday.