Thread: Roo Systems ECU Remap, including EGR system disable and catch can fitting - booked in

Thanks Brad, will be very interested to see how it goes. What is the thought behind the catch can? Was it roo systems recommend or something you decided to do?
Peter

Catch can - initially it was something I thought of doing. Although since then (and after a few professional opinions) I've actually decided to forego it. Although I've seen the good things they do when fitted to older vehicles (D2s and Defenders perhaps), the word is that the D4 3.0L has nearly no blow-by and therefore even over something like 10 years, its not worth it. I'm pretty happy to take this advice since it knocks $485 off the order.

The main issue - as I think most are aware of - is the EGR system. I'm having this completely disabled as part of the remap. On an interesting side note: they seems reluctant to use the word 'disable' when talking about the EGR system... they were initially talking about 'winding it back to minimum' and other phrases like that. I had to be very precise and clear about having them disabled forever etc... Makes me wonder if there are legality issues that I'm not aware of..?

Engine/exhaust gas temps - Roo Systems has assured me that both engine temperatures and EGTs will DECREASE, rather than increase. He did throw a few numbers around on the phone but I didn't take a lot of notice since I'm not currently (nor do I have the means to) monitoring these values and therefore comparing numbers is of no use to me. Aside from that all I have is there word that the remap remains 30% inside manufacturers safety limits for the engine and that the product comes with a 5 year unlimited km warranty on damage as a result of the remap (which I'd think would be hard to prove). Despite this, I've heard a lot of good things about this custom tune and am still pretty keen to see the results. According to Roo Systems and also my mechanic (who is familiar with the tune), there is no need to upgrade intercooler etc...

Well the tune will be done by tomorrow afternoon so I'll soon be posting my reactions and any dyno print outs that I get.

I think what you'll find about the EGR is they don't say disable as it's in the code of the ECU and can't be removed. It's sounds like a map or parameter based system though so adjusting it so that it never meets the parameters to 'open' is effectively the same thing.

Their reluctance to disable the EGR might be because the vehicle has an EGR to meet exhaust standards for harmful emissions, and has to meet those standards to be legally registered, so disabling the EGR may mean it is technically illegal, just like certain VWs. This is one of those inconvenient truths that some people prefer to ignore. Meanwhile, about 2000 Australians die every year from vehicle-related emissions, which is more than the national road toll, about which we hear so much fuss being made.

Well, dropped the car off this morning and am expecting some good results.

Good luck!

SOOOO!

Car is finished, all tuned up with the "Touring and Towing" flash tune from Roo Systems.

I'll be brutally honest for the sake of an unbiased review.

The first 5 minutes of driving I noticed very little difference in the drive of the car. Upon putting the foot down hard, she pulls well (but as we know, they always pulled well). So I was initially a little deflated.

Driving for 5-20minutes: I noticed a lot more. There is more power there, although its not obvious - definitely more subtle. The thing I noticed more than the extra power is the smoothness of the power delivery and that the power is available in more of the rev range. I can't be much more specific than that I guess.

I've only had a 20 minute drive so far and didn't get above 70km/h for very long. I also haven't tried any of the low range gears yet.

Roo Systems does have a 30 day money-back system, however I'll have to have a better drive to see whether or not I'm happy with it.

All told, the dyno showed a 17% increase. Again, this is less than I thought however I guess they're keeping the engine 'safe' by not pushing her too much. Imgur: The most awesome images on the Internet

My thoughts are that this is a good product that is safe for the car and provides a subtle increase in power and modifies power delivery for a more responsive and smoother drive throughout the rev range.

I'd be interested to hear if any one else has gotten this product on a 3.0L D4 and what their experience has been.

The best way to tell is drive a road that you used to use 4th gear and see if it will easily coast in 5th....