cool facts about EVOVII

[Turbo442]

Cool facts about EVOVII a few here may not know...

1. VII has a dual mode muffler with a varible back pressure valve that cuts noise at normal speeds and back pressure at high speeds.

2. VII is equiped with 3 IC sprayers.

3. Aluminum hood.

4. ABS system uses G-sensors, steering angle sensor, and wheel speed sensors.

5. GSR weighs 3080 Lbs, RS weighs 2904 Lbs

[Turbo442]

I forgot one more...

6. When the parking brake is activated the ACD switches to 'open state' thereby enabling rapid and effective side brake turns.

[violinandy]

wait, wouldn't that mean upgrading to an aftermarket exhaust would destroy the driving characteristics of the car at low rpms?

[superccs]

any news on the relocation of the intercooler for the US market Since the front bumper needs to be altered for 5 MPH collisions

im betting a horse drawn pickup truck that whatever modifications that they will preform will result in less effecient intercooling....

hence there will be a significant market for returning the design to the way it was originally

ofcourse this will risk financial difficulties if you ever crashed into something....

but that wont happen...

I'll Take Mine In Habellero Pepper Gold Please!:ylsuper

[Turbo442]

A turbo engine will be the happiest if you had no exhaust at all after the exhaust wheel. The less back pressure the better. Some have suggested that some backpressure will give a bit more low-end torque. I have not personally found this to be the case, although I am open to discussion on this. A dual mode muffler is cool because you can have a quiet car during cruise (listen to cds, talk on the phone) but still have the benefits of a free flowing exhaust at full power. The 3000 VR4 has one although electronically controlled. There are currently many aftermarket exhausts for the EVO VII, most of which will give marginal gains, with increase in noise, all else remaining the same. The biggest gain in turbo spool up and peak HP would come from removing the cat. The stock exhaust looks to be at least 2.5" all the way back which is nicely sized for the stock 16G turbo. Personally, assuming Mitsu imports the GSR relatively unmolested, I might consider swapping the turbo and exhaust manifold with the RS spec VI parts. That should help the turbo spool a bit quicker and give a bit more peak power sacrificing mid range torque. That would help the 1/4 mile time although sacrifice drivability. I would probably drop the cat as well. I noticed that the recommended Japanese spec fuel is premium (obviously). Does anyone know what octane rating this is? 91? 94? 98? Here in San Jose, CA we can get 100 unleaded at the pump for $4.00 gal, which I run in my DSM. Of course the EVO that is imported here will be setup to run on our 91 octane. This will be the biggest variable in the power output of the EVO. It determines the boost level, timing advance and compression ratio. Lets hope mitsu does not drop the compression ratio. Does anyone know what boost in psi the EVOVII runs stock?

Matt

[Crufty Dusty]

Originally posted by Turbo442
Does anyone know what boost in psi the EVOVII runs stock?

Matt

1.2 bar in 4th, which would be around 17.4 psi

Cheers.

[Humanoid Typhoon]

If I wanted to put a misfiring system on the Evo VII....how much would that run up?

[violinandy]

I don't think the cost of the misfiring system would matter as much as the cost of the 3000 bucks a week youd be going through in turbochargers.

[Turbo442]

Crufty Dusty thanks for the reply.

I had a few questions regarding the EVO VII. I hope you might be able to answer a few of them when you had a chance.

Many people in the US including myself consider Mitsubishi transmissions to be the weak point of their products. I understand that the EVO tranny has been designed to withstand the rigors of off road abuse and has evolved substantially over the years. How would you describe the shifting quality and over all feel of the 5 sp manual in the EVO VII? How would it feel compared to say an RSX 5 or 6 sp or possibly a S2000 transmission, both of which are considered to be top in their class. (Although not AWD)

I assume the brake rotors and calipers share the same specs from the VI and VII. The VI runs a front 12.1" rotor and a rear 9.5" rotor both vented. Front calipers are 4 piston rear calipers are 2piston. Are you satisfied with the brake performance that the VII has given so far? Have you ever experience any fade on the street?

What octane fuel do you run in your EVO?

What has been your biggest surprise/complaint as an EVO owner?

Matt

[Phu Dawg]

Here in San Jose, CA we can get 100 unleaded at the pump for $4.00 gal, which I run in my DSM

Which Gas Station in San Jose?

[superccs]

Good Questions Guy...

I Would like to know too :sun:

oOoOh and One More Turbo Forgot TO Ask... Is The Back Seat Big Enough To Comfortably Do...oh lets say a lady friend that needed some special attention..?


thanks yall

[Turbo442]

Phu Dawg,

Select 76 stations sell 100 unleaded...yes you read it correct UNLEADED! Safe for your cat and O2 sensors. Check out the 76 web site for locations in your area. The one in SanJose, CA is off Almaden expressway about a mile from the Cosco/Circuit city complex next to Hwy 85.

Matt

[Mekanikal Threat]

Having the octane of Japanese spec premium gas wouldnt do you any good......The way they rate octane is different from the U.S. market....maybe you could find a conversion chart or something......but im not sure

[Turbo442]

Mekanikal Threat,

I read some where that Japaese spec premium was equal to 98 octane in the US. I sure hope thats not the case but it really would'nt surprise me. Its pretty hard for me to beleive that you could get a 4G63 to run at 1.2 bar on 91 octane with out the ecu pulling timing quite often. (even with a big FMIC, and a 16G 7cm turbo that it comes with) I could see if it were running 98 octane but 91 would be pushing things. Remember, the factory can not tune a car to its maximum potential when it leaves the factory. Some of the varibles the factory faces are gasoline quality, potential for poor maintence of air and oil filters, harsh driving conditions such as temperature extremes or even the options the car is configured with. Since the EVO is not imported into the US yet there is not much info over here regarding its engine management systen (ECU). I can tell you that Mitsubishi ECU's with first and second generation eclipses are able to control timing and boost to a limited extent. Their ecu code has been fully reverse engineered. Todd Day has a interesting web site on Mitsubishi ECU's if you are interested.

www.tmo.com

If the EVO VII engine managemnt has advanced as much as the ACD, ACY and ABS over the years, we will have little to worry about. The technology exsists for the car to set its boost and timing level to the octane of the gas currently in the tank. Low octane = low boost, retarded timing and low hp. High octane = high boost, advanced timing and high HP. Remember power comes from compression ratio. A turbo engine has a varible compression ratio. When the turbo is making its maximum boost the motor is making it highest compression. Too much compression = detonation. Detonation is the limiting factor of peak performance. Sneaking up on detonation is a balancing act of compression ratio/timing advance/fuel map.

Matt

[Crufty Dusty]

Originally posted by Turbo442
Crufty Dusty thanks for the reply.

I had a few questions regarding the EVO VII. I hope you might be able to answer a few of them when you had a chance.

Hi I'm actually pretty new to all this so take it with skepticism

Many people in the US including myself consider Mitsubishi transmissions to be the weak point of their products. I understand that the EVO tranny has been designed to withstand the rigors of off road abuse and has evolved substantially over the years. How would you describe the shifting quality and over all feel of the 5 sp manual in the EVO VII? How would it feel compared to say an RSX 5 or 6 sp or possibly a S2000 transmission, both of which are considered to be top in their class. (Although not AWD)

Well I haven't driven an S2000, but I'd say the stock tranny is fairly average. Nothing fantastic, but not outstanding either. The clutch pedal feel is just like most Japanese cars - light.

I assume the brake rotors and calipers share the same specs from the VI and VII. The VI runs a front 12.1" rotor and a rear 9.5" rotor both vented. Front calipers are 4 piston rear calipers are 2piston. Are you satisfied with the brake performance that the VII has given so far? Have you ever experience any fade on the street?

On the VII GSR, the front are running 17" and the rear 16" ventilated discs, 4 pistons. Braking is good although I seriously suspect mine are warped already (less than 4500 kms, vibrating steering wheel under hard braking).

What octane fuel do you run in your EVO?

On the door it says to pump 95+ RON but I've been using at least 98. I'm trying out V-Power from Shell and maybe a few months later, Caltex Platinum which is 100.

What has been your biggest surprise/complaint as an EVO owner?

Complaints: none really. Besides the brakes (as outlined above) and the infamous clutch problem, the mysterious rumbling/groaning sound from the rear when doing high speed corners, that's pretty much it. Perhaps most of my fears or complaints may be allayed by an experienced and knowledgeable mech who really knows Evo's but sadly, I haven't managed to locate one yet.

Would I do it over again? Definitely. It's got 4 doors, has decent cabin room, good acceleration, good AC unit (which is critical in the tropics), and takes bends easily. And it offers value for money; the new BMW 318i costs slightly more than a parallel-imported Evo 7 here!