Hi Guys,

Take this info as a grain of salt, but it is a good read.

http://www.rpw.com.au/shop/index.php?option=com_content&task=view&id=277&Itemid=40


Vehicle Make : Mitsubishi
Vehicle Model : 380
Engine Model : 6G75 SOHC 24v V6
Transmission : Triptronic Auto
Location : Perth, Western Australia
Dyno Type : Dyna Pack Hub Dyno
ECU : Factory ECU
Brief Mods : K&N Panel Filter with RPW Cold Air Mod, 2 1/2' Exhaust / Twin Magna Flow Mufflers and High Flow Metallic cat converter, RPW Tuned Length Extractors, Tranmission Cooler

Other Notes : This vehicle was brought into RPW for our standard performance package for the Mitsubishi 380 as outlined in our vehicle modification guide. The vehicle came to us completely stock standard, and was immedietly placed on the dyno for a baseline run. The results were impressive with an easy 145kw / 192hp and 285nm of torque. These vehicles are rated at 193kw at the flywheel so everything was appearing true to form.

From there RPW fitted up our 3-1 tuned length race design extractors which replaced the factory triple cat converter system with a single cat converter. Oxygen Sensor extenders were used on the rear two O2 sensors to avoid any unnecessary CEL lights. The design of the extractors mean't that no extensions of wiring were required.A Lukey ultraflow 2 1/2" straight through oval shaped muffler replaced the restrictive unit on the rear. Still looking stock, the car had a much deeper sound and definitly opened things up.

The factory air box was opened up with a K&N panel fitler, and the lower pickup modified and cut to feed a secondary cold air feed directly into the airbox, as well as doubling the volume of air that the vehicle could now suck in at any time.Final modification was the mandatory Transmission cooler to extend the life of the transmission oil as well as improve the shifting pattern. This always results in better driving on the vehicles. The vehicle was then placed back on the dyno and a back to back test performed. As can be seen the results were impressive with the vehicle picking up to 161kw / 215hp and an average of 305nm of torque. The torque curve is not dead smooth, which is indiciative of the state of the tune, with the AFR values still reading very rich.

With a piggy back ECU fitted to the vehicle (Since no reflashing options are available for this yet) power and torque would easily rise to an estimated 230hp / 320nm torque without straining the friendship. You can have your cake and eat it to - the vehicle is already reporting improved fuel economy of around 1.5 L / 100km and obviously, much smoother acceleration. Proof that RPW research is dyno proven and that our extractor design has signficant gains over the stock system.

http://www.rpw.com.au/Photos/Customer%20Vehicles/Mitsubishi%20380/1DBF678%20380%20HPVAFR.jpg

http://www.rpw.com.au/Photos/Customer%20Vehicles/Mitsubishi%20380/1DBF678%20380%20HPVTQ.jpg

Other Notes : This vehicle was brought into RPW for our standard performance package for the Mitsubishi 380 as outlined in our vehicle modification guide. The vehicle came to us completely stock standard, and was immedietly placed on the dyno for a baseline run. The results were impressive with an easy 145kw / 192hp and 285nm of torque. These vehicles are rated at 193kw at the flywheel so everything was appearing true to form.

Since when did the 380 have a rating of 193kw at the fly? A good read yes, but a lot of misinformation on their website

if you look up 6g75 on wiki, that figure is quoted numerous times. i think thats the output of the mivec model? or one of the other iterations. :P

who cares if he says 193kw, 145kw to 161 is nothing to sneaze at, however it can be achieved by just buying their extractors and doing the rest of the work at your local shop

looks like a nice easy gain, regardless of the wrong quote. Anybody else have these extractors? Confirm or deny the claims?

Being a car RPW has worked on, I am surprised that it made it as far as a Dyno

Funny how "gains" have been had doing things that the real experts, ie the people who designed these cars, found actually caused loss of power in various ranges n hmmmm

looks like a nice easy gain, regardless of the wrong quote. Anybody else have these extractors? Confirm or deny the claims?

everyone that has extractors on the 380 on the forums are running these extractors. fooz, knotched, white to name a few.


Being a car RPW has worked on, I am surprised that it made it as far as a Dyno

Funny how "gains" have been had doing things that the real experts, ie the people who designed these cars, found actually caused loss of power in various ranges n hmmmm

you know they havent actually done much that you can seriously stuff up. which are the mods that the mitsu techs said resulted in a loss of power? not really defending rpw but i was thinking that in theory most of those mods seemed commonsensical? then again i dont know that much:D

I found them to be very friendly and easy to deal with.

With performance bits it's a hobby and mileage will vary......if RPW didn't take the time to make the extractor kit then we would be up the creek....

Actually, Stormie, I don't have extractors...yet...

I wonder what that kink is on their power graph @ 3600rpm - looks like Foozr's!

It's where the ECU has momentarily retarded the advance (bit overcooked on the AFR map methinks).

believe pacemaker have 380 extractors. Seen on ebay.

Actually, Stormie, I don't have extractors...yet...

I wonder what that kink is on their power graph @ 3600rpm - looks like Foozr's!

It's where the ECU has momentarily retarded the advance (bit overcooked on the AFR map methinks).
sorry must be KJ then i get you guys confused in my head all the time, sorry:P
yeah i think that was the problem mike (lenda) had as he did lots of his initial work done by rpw until they tuned his car and did such a bad job that he almost melted pistons or some such. his story go to him if you want a glowing recommendation for rpw:P


believe pacemaker have 380 extractors. Seen on ebay.
ive never heard of them, and there is nothing mentioned on the pacemaker website (magna is there however) possibly they were just ythe RPW/liverpool ones being sold as pacemaker to increase the price?

Actually, Stormie, I don't have extractors...yet...

I wonder what that kink is on their power graph @ 3600rpm - looks like Foozr's!

It's where the ECU has momentarily retarded the advance (bit overcooked on the AFR map methinks).

The "Kink" as you call it is gone with the blower.

I remember my tuner commenting on it & he said it indicates it needs more advance there but when he cranked it in it started pinging. He told me I needed better fuel to smooth it out & was already running 98 so no hope of that.

Do RPW have their own dyno?

It would have been nicer to have multiple dyno runs, done in order of mod expense. So do the cheapest mod first, dyno it, do the second, dyno it, do the third, dyno it. That way you could see where the biggest gains are made on which mod.

Seems odd they only modified and cut the lower pickup for a secondary air feed. Why not add the 90mm galant intake too?

Being a car RPW has worked on, I am surprised that it made it as far as a Dyno

Funny how "gains" have been had doing things that the real experts, ie the people who designed these cars, found actually caused loss of power in various ranges n hmmmm

I would be interested to know what you mean by that?

Funny how "gains" have been had doing things that the real experts, ie the people who designed these cars, found actually caused loss of power in various ranges n hmmmm
This is quite possibly the worst/misinformed comment I've seen posted here.

There's a happy medium to every setup. From the factory the 380's were designed for linear, smooth performance throughout the entire rev range.

Adding extractors/exhaust will always add more top end power. The con behind this is that it might lack a little more in mid range. Swings and Roundabouts.

Add cams,etc, will fix the mid range. Which will in turn once again change top end power.

I would be interested to know what you mean by that?

I suspect what Mal is getting at is that arguably many of these mods, whilst they may increase top end power, result in reduced power and more importantly reduced torque in the low and medium rev ranges.

Remembering that the Aussie 6G75 was designed specifically for lots of low and mid-range torque and not a huge amount of top end power. 175kw is pretty feeble really for a 'modern' 3.8l motor, when a mild tune Aurion 3.5l puts out 200kw.

But the stock 6G75 has a strong and flat torque curve up to around 4,500 rpm.

Would be an interesting exercise to compare the torque curves before and after the mods, but the RPW article only shows the 'after' curve.

I can vouch that my mods, which are very simiar to these RPW mods, have released quite a bit of top end power and the motor now revs out much cleaner and faster than it did before the mods. But I haven't noticed as big a change with low to mid-range torque. Maybe a little more but not a lot, especially way down low (1,000 to 1,500 rpm).

KJ.

The "Kink" as you call it is gone with the blower.

Got a bite! :woot: :badgrin:

I've lost no low down or midrange at all. That's proven on many dynos. Being one of the first to fit the 90mm I swapped it backwards and forwards with the stock one many times to assure myself i wasn't losing anything. In the end the dyno told me I was gaining right through the rev range.

If I told White or Foozr I didn't think SC was the right way to go they wouldn't give a tinker's cuss; same when I told Mecha I thought changing globes was a w**k - they all really happy with what they've got out of modding their cars - the same as me.
So I wouldn't worry about Mal's comment; he's entitled to his opinion.

As for the Aurion don't forget it has variable valve timing, higher compression etc, and if you consider the 380 should have had 180KW with the "correct" intake or even more if Mitsu had paid Bosch to remap the ECU, it's doing alright.

Got a bite! :woot: :badgrin:

I've lost no low down or midrange at all. That's proven on many dynos. Being one of the first to fit the 90mm I swapped it backwards and forwards with the stock one many times to assure myself i wasn't losing anything. In the end the dyno told me I was gaining right through the rev range.

As for the Aurion don't forget it has variable valve timing, higher compression etc,

and if you consider the 380 should have had 180KW with the "correct" intake

or even more if Mitsu had paid Bosch to remap the ECU, it's doing alright.


So which is the "correct" intake and why wasnt it fitted...

I have often heard about this REMAP THE ECU,what is wrong with the current one ?

why wasnt it remapped ?

and where was it mapped from originally ?

and what more could have been gained..?

So which is the "correct" intake and why wasnt it fitted...Correct intake is the 90mm, the factory intake is from a 2.4L enigne...very restrictive.

I have often heard about this REMAP THE ECU,what is wrong with the current one ? The current ECU runs too rich, a propper tune will give you better performance/throttle response and fuel economy.

why wasnt it remapped ? A richer tune is safer for the engine from a Mitsubishi point of view. Its was meant to be fine tuned before the release but MMAL didnt have the money.

and where was it mapped from originally ? Dont know

and what more could have been gained..?Should be around 185-190kw atf.

My comments in RED

The 2.4 intake was for the auto failing the driveby noise test, to much induction noise on kick down through the test.
Bosch could of got the flyby wire throttle blade to close alittle at that point but it was to late and no money.

Rich mixture is purley to keep the close couple cats at the specified 900 degrees c. Engine has to be mapped to max catylist temp not max power.

Yeah a bit more time and money or if MMAL had stuck with the melco system annd it would have been a 182-185 kw engine for sure, maybe even more if MMAL had used the single under car cat with the quick light up bick in front.

It is a engine with great potential, I love em!

Cheers Dave

Rich mixture is purley to keep the close couple cats at the specified 900 degrees c. Engine has to be mapped to max catylist temp not max power.
Cheers Dave

Hmmmm well that may explain the other codes I was getting off the O2 sensors as I have the piggyback tuned more so for power & probably incorrect catylist temp.

Who cares anyway, my dash pod mod means I haven't seen that silly CEL for a while now :happy: