evoWALO

If you had to choose between what to improve on your Evo what would you get? Mods for more torque or horsepower? Why?

X-ing

Torque(RPM)/5???=Horse Power

Pete_S4

I think your question might be better stated as improved low vs high end. Improving low end response, which has which usually shows up as increased peak torque, is best for daily drivers. Improved high end is best for race cars, drag racers, and ballers.

Realize most mods out there mainly improve higher end. If *preserving* the low end is important to you, don't get big HP numbers in your head. Keep the mods on the realistic end. Stick with the stock turbo. Sticking to boost mods and exhausts are usually the best.

Want high end, go crazy on the turbo. The EVO already has a pretty large turbo compared to many stock turbos, so even some of the milder turbo upgrades can be quite laggy for some people's tastes.

smittyinva

iTrader: (1)

/5252

rlazer5000

iTrader: (16)

You can have all the horsepower in the world, but if u have crappy torque, then your not gonna go anywhere. That's why Hondas have to rev to like 7,000 RPM in order to get some speed. In the S2K, u have 240 horsepower, but a measely 150 torque......good luck trying to beat anything off the line with that crap.

EVOTEXAS

iTrader: (12)

What you want is more torque HIGH in the revs but starting in low revs. I want 600 ft lbs at 1000 - 7000 RPMs. The horsepower will follow. It's all based on torque and where you make it.

en1gma19

iTrader: (23)

+1

SuperHatch

iTrader: (23)

Here's the deal, torque is all that matters. That and where you make it....

If a car makes 600lb-ft from 1000-4000 RPM it will be able to accelerate quickly. Same goes for a car that makes 600lb-ft from 4000-7000 RPM. However, the later will have more HP due to the previously stated equation. This is the kicker though... gearing.

Assuming the transmission ratios are the same in the first and second cars. The first car's powerband falls on it's face after 4000 RPMs, so it will need a tall (numerically low) final drive to be able to travel the same speed as the car whose powerband revs to 7000 RPMs. Also assuming that traction is not an issue for either car, the car with the higher reving powerband and shorter (numerically higher) final drive will accelerate quicker than the low-reving car. Why?

Simple, because the torque at the motor is being reduced/multiplied (depending on gear) by the transmission and differentials, however the torque is being multiplied more in the higher reving car, so it puts more torque to the wheels. More torque to the wheels = faster acceleration. That is why all those domestic guys love putting gears in their muscle cars and why they see such huge gains from doing so.

But, as Pete S4 stated, torque at lower RPMs is better for daily drivers simply because that's where our motors are at most of the time. which is why, as EVOTEXAS stated, having a large, BROAD powerband is da bomb

housedj

iTrader: (2)

torque is the 1 thing the V8 crowd has over us. hp is easy to make but torque is another story. you can't have 1 w/out the other. i say drop in a 4G64 block on an EVO head, add a 20G (same motor as super rare Ralliart evo) which gives you about 450hp & 450tq...

wingless

iTrader: (15)

Can you give me a link or any info on this ralli art EVO?

95GSXtoEVO8

iTrader: (3)

How does the WRC car only make like 300hp but like 400tq?

Turbojunkie

iTrader: (21)

So, what is better.

1. high torque curve from like 3k peak (like most evos) with a sharp drop in the curve let say for fun 300 ft lbs at 3k and dropping to 225 ft lbs by 6800 rpm
or
2. mild torque curve lets say 275 ft lbs at 3k with it dropping only to 245 ft lbs by 6800 rpm.

Assume most of your racing is 1/4 mile. Which is better?

EVOTEXAS

iTrader: (12)

Well think about it, if you launch at 4K and rev to 7K and when you shift it drop to, say, 5K, what which would you rather have?

mike69

WRC cars have restrictors. In reality they're making more than 300hp, they just claim that. They run like 3 bars of boost on those motors.

Turbojunkie

iTrader: (21)

more torque in the higher range