Lancer Register Forum banner

Madmac Motorsport's Twincharged Evo 5

598840 Views 2421 Replies 217 Participants Last post by  Madmac
During the winter build of the old Evo 5 hillclimb slag I decided to look at ways of reducing the turbo lag which was becoming an issue and costing precious hundredths of seconds on the hills last year. It never lacked top end power but the lag really started to get to me and i knew i could make it quicker point to point by reducing the lag - but keeping top end power.
I looked at many possible ways to do this but in the end settled for adding a supercharger to run in conjunction with the turbo.

Designed and built by myself with input from friends and members on MLR, most parts have been fabricated in my garage from whatever was lying around, the end result has been worth the blood, Sweat and tears I've put into this.

We've had her on the dyno at Wallace Performance in Aberdeen and had surprisingly few teething problems considering the unknowns and the huge amount of bespoke parts that needed to be designed, fabricated and made. Initial mapping is done now and the whole package is showing some serious potential! We've decided to keep the system at it's minimum until i do reliability tests and learn how to drive it properly :angel:

I've also designed and built a tubular front subframe and arms (total 9Kg:D) to reduce front weight and while i was at it, it seemed rude not to play with the suspension geometry!

I want to thank a few people for their input and help:

Russ and the guys at Wallace Performance who did the mapping and supplied parts/tea/banter etc. Top guys and never ones to shy from a challenge! Can't thank you enough:smthumbup:D.

My mate Steve Marr who is the main technical guru, and who i regularly bugged to ask lots of questions on a daily basis:smthumbup.

My mate Graeme Wight Jnr for his help with the front subframe and major suspension geometry changes, Exhaust and general setting up

Alan Young Engineering Ltd for the quality machined bespoke pulleys and parts, Spot-on parts and great prices

And everyone else who suffered because of my constant lust for knowledge during the build:smthumbup:D

As yet i've to do some miles and get her setup for the start of the 2010 Scottish Sprint & Hillclimb Championship, so for the moment i'm being realistic about expectations & screwing the nut until i check everything over and get used to driving it. Hoping to do some track testing soon though. I've had her out for a short drive and so far the whole package is working impressively. Instant delivery at anything above 2500rpm with absolutely awesome accelleration in every gear! This is on it's lowest boost setting too....

Over the next few months The guys at Wallace Performance & I are going to refine some of the setup and see what she's really capable of! We know we can find a lot more power & torque with some simple changes.

Meantime i'm happy with the initial results and looking forward to Doune Hillclimb in 2 weeks:D:D Should be fun!

Keep watching....;)


See less See more
1 - 20 of 2422 Posts
The video says it all! The VBox was mounted vertically so G-force readings are all wrong
The G readings looked OK to me. As far as I know you can mount the box in whatever orientation you like and it makes no difference to the readings:confused:

The Doune course looks very narrow:eek:
Great stuff Donald, and glad to see you've got the Vbox sorted. Any chance you could let Kenny1 or I have one or two of the data files for the timed runs? What I'm particularly keen to see is G force data - both lateral (to see how the avons are working) and longitudinal (to see both grunt and braking power). From looking at the readouts from the vid there are some biggish numbers going on:eek:
I thought steven won?

Your car looks rapid Donald, even in the wet. But that there a delay?
Speedo reading surely has to be way out:eek:
Well just walked in from a great ish weekend !
Do tell more:)
My best time was 50.18 for the week end ..
So you beat Donald by quite a margin:eek: Lots more info required - new thread perhaps?
The incar video makes everything look very smooth and relaxed. Just a pity you didn't have a bit more competition from the likes of Paul and Kenny.

One thing I couldn't quite work out was whether you were in first or second on the tight corners. Looked like second, although I thought you quick guys quite often got down to first for the really tight corners:confused:

Oh, and can you please explain exactly what a "false neutral" is. Between eg 4th and 3rd is there a position where the dog ring(?) can sit that isn't contacting either gear (ie in a "neutral" position)?
Just calculated Donalds vbox 0-100 from 2 sections of vbox data at ingliston.

0-60 = 3.09
60-100 - 2.37

How many gearchanges in each data record? You might need to add, say another 0.1 (or take if off if both included two changes) to the combined. Extremely quick either way:eek:
I don't think Steven's post was intended like that - more a straightforward statement of fact.

Either way, from my armchair TA experience it's not so much the top speed reached, but where you brake for the next corner that counts most.

All four of you still have more to come if you really apply yourselves. Maybe I should send Knoxville out in my car to show you all how to do it:crackup:

Oh dear though, my car isn't MSA compliant:shake:
Phil, i thought TA was governed by MSA now so it should follow the same technical rules in the Blue Book?
The way I understood things is that it's basically run under MSA rules but with a number of accepted deviations. For example, I believe MSA rules say you can't run carbon brakes, but they are permitted in TA.
Well done Donald:smthumbup Looking at the vid I see the speed readout drops to zero for a while:eek: I wonder if you lost satellite coverage or might there be some kind of issue with the Vbox?
Donald - how are the Avons standing up? Have you noticed any fall off in performance as they go through more and more heat cycles? Are you cleaning them up with the heat gun treatment after every outing?
To me there's a particular satisfaction from seeing a five door family saloon do the kind of things that you and others do with them. Will you lose that if you move to this new project?
Is yours a hatchback then Phil? :confused::lol:
Haven't you got better things to do with your time:crackup:
Fantastic run Donald - really smooth and sounded brilliant:smthumbup
  • Like
Reactions: 1
Or come along to TA at Croft as a One Hit Wonder on the Sat (11/5) and do Harewood on the Sunday. Sorted:smthumbup
  • Like
Reactions: 2
Sounded like a tractor on the start line:lol: A bit different once it got going though. Looks hellish difficult to really hook it all up running that kind of power, but I guess that's the challenge and when you get it right it'll be an amazing feeling. Good luck tomorrow:)
  • Like
Reactions: 1
Smooth, smooth, quick quick, smooth - will always give you a good time. Weather is looking perfect for it down our way this morning. Same up your way?
Did intake temps go sky high? I assume the map takes out some timing which is why it felt less lively?
1 - 20 of 2422 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.