[Frosty]

I have an exhaust on order but it has fallen victim to an unexpected delay - a couple of questions:

1) I understand that the RA ECU is designed to run with a free-flowing exhaust system. Is it worth fitting the ECU along with just a decat pipe, or should I wait and fit the ECU, decat pipe and exhaust together.

2) Does the RA ECU also demand an uprated air filter or induction kit?

I don't want an induction kit because searching this forum has revealed the standard air box is a better option. Will it be a problem running a standard filter? It will put my insurance up by another £150 by fitting a non-standard panel filter because of my age!

 

[stu8]

I have an exhaust on order but it has fallen victim to an unexpected delay - a couple of questions:

1) I understand that the RA ECU is designed to run with a free-flowing exhaust system. Is it worth fitting the ECU along with just a decat pipe, or should I wait and fit the ECU, decat pipe and exhaust together.

2) Does the RA ECU also demand an uprated air filter or induction kit?

I don't want an induction kit because searching this forum has revealed the standard air box is a better option. Will it be a problem running a standard filter? It will put my insurance up by another £150 by fitting a non-standard panel filter because of my age!

Fitting a blitz filter definately made a difference on my car (same intake as a VI). I would have thought fitting the Ralliart ecu may show some gain due to the de-cat, but in reality a full exhaust and intake, along with a slight increase in boost is when you will really see the benefit.

Is it a ralliart panel filter that cost so much on insurance?

Stu

 

[nick5]

if you do a search on ralliart ecu you will find loasdsa info about them,to make any use of the ralliart ecu,u will need a shoppin list like mine.
\/ \/ \/ \/ \/ \/ \/ \/ \/ \/ \/ \/ \/ \/ \/ \/ \/ \/ \/ \/ \/ \/ \/ \/ \/ \/ \/

 

[Frosty]

So the general opinion is to not fit the ECU until I have a free-flowing exhaust?

 

[AndyF_RSX]

Frosty,
THe ECU on it's own won't really do that much. To get the real benefit from it you need to use a boost controller to increase the boost level. Then you will see a big improvement.

Andy

 

[Frosty]

That's OK it's all in the pipeline, but the trouble is the parts are coming from Japan which can take weeks as you probably know.

The main reason I'm fitting it so soon is to stop the fuel cuts from having the exhaust.

Still not sure about this air filter business though. My insurers charge the same for induction kit, replacement panel filter etc. It's literally just a tick-box saying "non-standard filter!"

Will the ECU be happier with one?

 

[stu8]

That's OK it's all in the pipeline, but the trouble is the parts are coming from Japan which can take weeks as you probably know.

The main reason I'm fitting it so soon is to stop the fuel cuts from having the exhaust.

Still not sure about this air filter business though. My insurers charge the same for induction kit, replacement panel filter etc. It's literally just a tick-box saying "non-standard filter!"

Will the ECU be happier with one?

AFAIK, it is designed to have an uprated filter. Are you saying you suffer Fuel-cuts now with just the de-cat, if so maybe yo, ur actuator is knackerered. if not, just an up rated exhaust might not cause fuel cuts. But, if you do suffer fuel cuts, that is one good reason to fit the ralliart, just don't expect any real performance gain without increasing boost. thenif you are going to raise boost to more than 1.2 bar, you should consider an uprated fuel pump. just make sure you have a boost guage so you know whats going on

Stu

 

[Frosty]

Thanks stu.

At present the car is totally standard, but I figure it's better to prevent something that almost certainly will happen, which is why I have decided to go with the RA ECU when fitting the exhaust and decat.

It's also because I have plans for around 370bhp, so it's a future-proof mod.

I think I'll wait and do the whole lot together, and then get the boost controller. Wack it up to 1.2 bar and take it from there.

Anyone know where I can get a Ralliart panel filter? From searching the previous threads this one seems to be the best in terms of flow and filteration.

 

[stu8]

I think 370 is a bit much to expect from a ralliart ECU, max it wants to be running is 1.4/5 bar which is about 340 - 350 hp, anymore and you should be thinking of mappable ecu's.

IIRC, the standard fuel pump is good for max 1.2 bar, and the fueling map in a ralliart ecu is good for max 1.5 bar (could someone confrim?)

Stu

 

[SG 1969]

plug in the ecu with exhaust and decent air filter,dont forget the fuel pump,set boost to 1.5 with a dawes or similar you will get about 350 brake with correct fuelling
cheers
steven
p.s you can just plug the ecu in without any other mods while you are waiting for yoyur exhaust but you will only get a slight increase in boost

 

[AlBoy]

i managed to get nearly 380bhp with just the ralliart ecu setup, that was at 1.5 bar. my torque is a little low though.

 

[mitsygirl1]

we have a stage 1 on the car then fitted a ralliart ecu and, we got no more boost or torque. so we took it off.

 

[stu8]

we have a stage 1 on the car then fitted a ralliart ecu and, we got no more boost or torque. so we took it off.

You need a boost controller of some description to increase the boost also. The ralliart Ecu will run upto 1.5 bar boost, the standard ecu will not support this boost, and will fuel cut. Increased breathing will give slightly higher boost due to less restriction, but the ralliart ecu alone does not increase boost, something as simple as a Dawes valve will give good results with the ralliart ecu

Stu

 

[mitsygirl1]

with the standard ecu we boost at 1.2 bar and have 305bhp. is that about right.

 

[stu8]

with the standard ecu we boost at 1.2 bar and have 305bhp. is that about right.

Would have thought so

 

[carsevo99]

ralliart

i fitted a brand new ra ecu ive got only racing suction and boost gauge hks dumpvalve car is no different gone in today for a motorsport pump exhaust and de cat and iridium plugs now ill see the difference even with out a booost controller my 6 runs good boost standard 1.3 bar fuel cuts of a exhaust should never happen sounds like a acuator gone

 

[Frosty]

No I've never had a fuel cut, and by fitting the RA ECU I'm making damn sure I don't have one any when I fit the exhaust.

 

[stu8]

Re: ralliart

fuel cuts of a exhaust should never happen sounds like a acuator gone

Its different from car to car, and on how cold it is, my car used to fuel cut at less than 1.3 bar, with uprated filter, exhaust and decat

Stu

 

[skeletor]

The Ralliart ECU will up boost without a boost controller.

Mine used to peak for a brief millisecond at 1.5 bar and hold 1.2-1.3 bar. No need for a fuel pump and should not fuel cut. If it does the actuator will need replacing/adjusting.

My car did have a HKS Exhaust, Induction and de-cat.

It is one of the easiest and most reliable mods you can do.

John

 

[Frosty]

The Ralliart ECU will up boost without a boost controller.

Mine used to peak for a brief millisecond at 1.5 bar and hold 1.2-1.3 bar. No need for a fuel pump and should not fuel cut. If it does the actuator will need replacing/adjusting.

My car did have a HKS Exhaust, Induction and de-cat.

It is one of the easiest and most reliable mods you can do.

John

Perfect that's just what I wanted to hear. Thanks John.

Managed to get the ECU from a contact in Japan brand new and delivered for £550. Pretty happy with that.

It's just a case of playing the waiting game now. Fun fun fun.