Dyno Tuning Wellington: The Nugget

It’s been years since starting this project and now it’s time for the moment of truth; The dyno tune.  Working at STM (Speedtech Motorsport Ltd) really does have it’s perks, I managed to twist Chris Wall’s arm into tuning my car after hours.

Once on the dyno it quickly became apparent that I had a couple of problems.  The first being boost creep and the second being the fuel pump was not flowing enough for the level of boost we were seeing.  Both of these problems aren’t uncommon, most early Mitsubishi EVOs with a big turbo back exhaust suffer from boost creep.  I have already ported the wastegate port on the turbo housing to try and remedy the situation. Turns out that wasn’t enough.  The ideal fix for this problem is to fit a 38mm external wastegate, at this stage I’m going to try and steer away from this solution.  The only reason the creeping boost is a problem is because I’m running out of fuel at high RPM.  My preferred solution due to budget constraints is to fit a high flow Walbro fuel pump and see how we get on.

Currently on 95 octane gas the little EVO is making 188kW ATW, not a bad result.  I’ll let you know how it goes once the fuel pump has been replaced and we are running 98 octane gas.

Horrible photo. I know. Sorry

Totally Exhausted – Rage Exhaust Installation

An exhausts, all cars need them.  This is the super short version cos I’m really tired.  My good friend Ron from Total Performance has owed me an exhaust for some website design work I did way back when.  Anyways I never had anything to put it on till now.  Seeing as the Nugget is really just a mini EVO Ron supplied me a 3″ bolt on Rage system to suit an EVO 2.  Bam went about taking some length out of the system to make it fit.  The result, an exhaust and a car that no longer sounds like a tractor.  Super happy.

My car with the exhaust laid out waiting to be installed.
New Rage exhaust system
Bam cuts exhaust to appropriate length.
Welder Bam joins the exhaust back up after removing a 2″ section

Didn't he do well....no? Well it's after work and he had had a few beers.

You need a hole for the 02 bung. Check it out a drill with lasers!

Here is my updated to-do list.

  • Install rear 1/4 windows
  • Install roof strips
  • Install rear seats
  • Install rear seat belts
  • Fabricate exhaust
  • Power steering belt
  • Replace the fuel level sender
  • Replace the fuel pump
  • Fit new solenoid to passengers door
  • Hook up A/C wire
  • Find and fit awesome steering wheel
  • Find, fit and paint EVO 3 Side Skirts
  • Stereo, if we get that far
  • Dyno Tune
  • Wheels
  • Suspension
  • Cert
  • Oil pressure warning light
  • Crazy indicator problem