2003 TL Mitsubishi magna vrx

Getting the most out of your engine without breaking the bank.
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mdejong90
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Joined: 08 Jan 2020, 12:58
State: New South Wales
Model: 2003 Mitsubishi magna vrx
Engine: 3.5-Litre 6G74 V6 24V SOHC
Transmission: 5 Speed Manual

2003 TL Mitsubishi magna vrx

Post by mdejong90 »

I have recently just bought a Mitsubishi Magna VRX limited edition and I am looking for advice on going down the road of more power, I am willing to sink some $$ into it over time, but looking for best bang for buck mods... Getting mixed information, and would like some advice.. the car at the moment is completly stock, it's a 5 speed manual

Manual3
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Model: 380 Platinum
Engine: 3.8-Litre 6G75 V6 24V SOHC

Re: 2003 TL Mitsubishi magna vrx

Post by Manual3 »

The best bang for the buck is a conversion to the 6G75.
I don't know where you are but there are a few Mitsubishi specialists who carry out this conversion.

mdejong90
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Joined: 08 Jan 2020, 12:58
State: New South Wales
Model: 2003 Mitsubishi magna vrx
Engine: 3.5-Litre 6G74 V6 24V SOHC
Transmission: 5 Speed Manual

Re: 2003 TL Mitsubishi magna vrx

Post by mdejong90 »

Manual3 wrote:
11 Jan 2020, 18:34
The best bang for the buck is a conversion to the 6G75.
I don't know where you are but there are a few Mitsubishi specialists who carry out this conversion.
I eventually will be doing that but for now I will be going for a performance exhaust and extractors as the exhaust needs to be replaced because of a hole, will be patched up in the meantime but I don't know where to look for them... I want to get the rpw extractors but I can't find prices on an exhaust system for it and idk where to start looking

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[TUFFTR]
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Model: TUFFTR & Minge Mobile
Engine: 3.5-Litre 6G74 V6 24V DOHC
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Re: 2003 TL Mitsubishi magna vrx

Post by [TUFFTR] »

I can 100% tell you extractors are for looks. The factory exhaust manifold is actually a very good design, free flowing, no major flow issues. Extractors will look nice but you will feel 0 gain from them.
Best bang for buck modifications
- 6G75 camshafts, bit of a pain in the ass to fit for sure, but you'll grab a set of cams for $40 from the wreckers, and these are a great upgrade on the 3.5L
- 3.8L intake manifold modded to suit the 3.5L.
- Flash the Ralliart tune on.

I did the above, cost me about $500 in total, and well, the car was AWESOME. Really woke up the 3.5L. I loved it to the point I didn't care for the 3.8L as the small mods and money spent on the stock motor went so bloody good.

Not much else you can do unless you want to go down the more money path

mdejong90
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Model: 2003 Mitsubishi magna vrx
Engine: 3.5-Litre 6G74 V6 24V SOHC
Transmission: 5 Speed Manual

Re: 2003 TL Mitsubishi magna vrx

Post by mdejong90 »

What power increase would I see with the flash ralliart tune?

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[TUFFTR]
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Re: 2003 TL Mitsubishi magna vrx

Post by [TUFFTR] »

Not alot. The ralliart had a few small differences.
- Extractors (Told worth a whopping 1kw, you needed something on the car for the $50K you were forking out right?)
- Camshafts
- Upped compression 0.4 of a point
- Headwork, which did help with flow.
- Tune


All that didn't result in 180kw as claimed, those camshafts were taken out due to idle concerns, and the cams they have are at 173kw.
over the base VRX that's 10kw gain at the engine.

So get the cams and at least the tune, you WILL see a difference, but a small one at that

Dave TJ
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Re: 2003 TL Mitsubishi magna vrx

Post by Dave TJ »

Don't get a Ralliart tune for this project. The Ralliart tune uses the same fuel map with less timing than the standard 3.5 map. Due to better air flow and higher comp.
Free up the exhaust put an extra duct in the air box from a fresh air pick up. Put the 380 cams in, modded 380 intake and get a proper tune after your changes and if you can afford 98 you'll pick up some good torque gains not so much top end power. The torque is what's going to really liven it up.
I'd usually say go the 6g75, but I realise not everyone wants to go that far. Cheers Dave.

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[TUFFTR]
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Re: 2003 TL Mitsubishi magna vrx

Post by [TUFFTR] »

Dave TJ wrote:
27 Jan 2020, 16:16
Don't get a Ralliart tune for this project. The Ralliart tune uses the same fuel map with less timing than the standard 3.5 map. Due to better air flow and higher comp.
Free up the exhaust put an extra duct in the air box from a fresh air pick up. Put the 380 cams in, modded 380 intake and get a proper tune after your changes and if you can afford 98 you'll pick up some good torque gains not so much top end power. The torque is what's going to really liven it up.
I'd usually say go the 6g75, but I realise not everyone wants to go that far. Cheers Dave.
I swear the RA tune had a few more degrees in it....
gotta go revisit my files.....

mdejong90
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Model: 2003 Mitsubishi magna vrx
Engine: 3.5-Litre 6G74 V6 24V SOHC
Transmission: 5 Speed Manual

Re: 2003 TL Mitsubishi magna vrx

Post by mdejong90 »

Well I have decided to go the 6G75 route... What recommendations would you suggest me getting... I have been told to do the cams, and I am going to be running a 3" exhaust system, what high flow cat and muffler would yous suggest? Also for extractors... Been told to get HM headers but they are no longer available... What other options do I have in regards to that?

Dave TJ
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Re: 2003 TL Mitsubishi magna vrx

Post by Dave TJ »

Good choice, I'd try it without cams first they are a fair investment. Get some Pacemaker extractors to go with the 3" exhaust. Get the 380 plenum modded to fit, it's a good gain for not much extra work. Get it properly tuned and see if that's enough for your needs. Cams can always come later.
Hope this of help cheers Dave.

mdejong90
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Posts: 7
Joined: 08 Jan 2020, 12:58
State: New South Wales
Model: 2003 Mitsubishi magna vrx
Engine: 3.5-Litre 6G74 V6 24V SOHC
Transmission: 5 Speed Manual

Re: 2003 TL Mitsubishi magna vrx

Post by mdejong90 »

Dave TJ wrote:
14 Mar 2020, 10:01
Good choice, I'd try it without cams first they are a fair investment. Get some Pacemaker extractors to go with the 3" exhaust. Get the 380 plenum modded to fit, it's a good gain for not much extra work. Get it properly tuned and see if that's enough for your needs. Cams can always come later.
Hope this of help cheers Dave.
You're right, I can always just get the cams later. I'm looking at buying ralliart extractors but, also I don't really know the difference between the ralliart extractors over say pacemakers... I can't seem to find any HM headers

Dave TJ
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Re: 2003 TL Mitsubishi magna vrx

Post by Dave TJ »

The Pacemakers have a lot longer primary pipes. HM made the Ralliarts I think the problem with them is the front engine is no longer available so you have to get the standard one modified to suit.

mdejong90
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Posts: 7
Joined: 08 Jan 2020, 12:58
State: New South Wales
Model: 2003 Mitsubishi magna vrx
Engine: 3.5-Litre 6G74 V6 24V SOHC
Transmission: 5 Speed Manual

Re: 2003 TL Mitsubishi magna vrx

Post by mdejong90 »

Dave TJ wrote:
27 Mar 2020, 07:54
The Pacemakers have a lot longer primary pipes. HM made the Ralliarts I think the problem with them is the front engine is no longer available so you have to get the standard one modified to suit.
So from saying that, it would be better just to go the pacemakers over a set of ralliart? It's to suit a 380 conversion and I'm new to all of this

Dave TJ
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Re: 2003 TL Mitsubishi magna vrx

Post by Dave TJ »

Yeah that would be my choice.

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