Hey All.

Im from australia, and I own an EVO 8. Now, what Im looking for in my vehicle is torque. Im not overly interested in the big numbers up top. Im VERY interested in the mid-range, cause Ill be spending more time there then the top. (although a Nice top end wouldnt hurt on the track either).

I track my (circuit), and I am yet to run it down the quarter. But as I said, Im not really trying to chase quarter times. Im mainly TRYING to build a tough and consistant street car, that can lay down the law at a track day without changing much. (Brakepads & tires only).

I dont want to sacrifice too much responce in the quest for a faster car, but I am willing to lagg a little more. (not much). Currently full boost is achieved @ 3600rpm.

I have considered upgrading to a Trust T67 Turbo Kit down the track, but the thought of another 1000~1200 Rpm worth of lag has well and truly scared me off, dispite the massive increase of torque I would get...

Also, I have no intention, nor do I want to use any additives, such as water/meth injection, NO2, etc.

So far my car has the following Modifications;

• Fujitsubo RM-01A 3" Catback Exhaust
• HKS EVC 5 Limited Edition - Electronic Boost Controller
• Gruppe-M Carbon Fibre Air Ram Intake
• Walbro 550hp Fuel Pump
• Custom ECU Flash Tune

Now, In saying all that, My car is making around 235hp @ all four wheels, on 98 RON fuel (I cant get any better fuel here). This figure is achived on 21 psi (1.45 BAR).

Now, In my next stage of mods, Ive been planning to install the following.

• Plasmaman LICP & UICP
• Intercooler (Still dont know which brand, I have been thinking AMS? Plazma man? Suggestions?? )
• Tomei Dump & Front Pipe
• Samco Suction Pipe

I will have this tuned to 98RON & 1.5 BAR again, in an attempt to get some more power + torque. This should bring me up into the 280~300hp region.

After that stage of modification, I will make sure I get used to the extra power & torque, but My finale stage will comprise of the following, which will be done at the time of my timing belt service.

• Heads Port + Polished, Fitted w/ springs & retainers
• 272 Degree Cams (Cosworth or JUN )
• Exhaust Manafold Upgrade (Standard Exhaust Manafold Honed, Ported + Ceramic Coated)
• Turbo Upgrade (Evo Red Turbo)

Basically, I have my modification path set out in my head, but Im unsure of the end result, would it be a waste of $$ to do some things on my lists, or Will they all give me nice increases?

I have no idea what the differences between the american brand intercoolers are, but im looking for something that will go with the stock piping, and I wont need to cut much.

This is the same with the turbo chargers. I know a guy over here that has an Evo 9 turbo (standard) w/ HKS 272's, TBE, Fuel pump, boost controller & Intercooler piping making 300hp @ the wheels. So what is the difference between the green? red? should I be looking at something a touch bigger?

And in terms of the Mani? What would be the bast bang for buck?

Also, would any of the mods that I have listed, not work that well, or a waste?

Many thanks to anyone that can give me some advice... *lol*

Cheers,
Alex

 

if you want good spool and midrange power go for a FP RED.
In you case I would do this

Ported IM with 65mm TB
Ported Stock Exhuast manifold or aftermarket if you want
Fmic; AMS,Buschur or ETS are all great
FP Red turbo
Kelford 272's (I think this company is close to you NZ?)
For your head:
Aftermarket stock size valves (I don't think you need oversize valves)
Single or dual Springs (up to you but I would go with singles if your reving below 9k)

 

Since you are looking to build a tough street car that you can track well with, have you looked into your handling options? A low powered car that is properly set up will beat a high powered vehicle that has no handling upgrades around the track. Just a thought.

Other power options that are popular here are flow mods: ported intake manifold & throttle body on top of a ported exhaust manifold & turbo hotside mentioned above.

Hope this helps out Alex.

Cheers Steve

 

Thanks for the info guys!

Very helpful!!

And yes, I do have my handling sorted. I already have coilovers (which I am going to pull out an replace), I have sway-bars waiting to go in, along with some DBA 4000 series slotted rotors and ferrodo DS2500 Pads...

So what are the differences between a Evo Red & green?

Also, is the throttle body & intake manafold worth the gains?

 

Wow...not many people like giving advice eh...?

 

How does everyone rate JUN cams?

Im interested to know thier duration at 0.050" of lift.. I have heard they are quite agressive... But thier lift is only 10.8mm where the Cosworths are 11mm...

 

I have the Green turbo, but am seriously considering stepping up to the Red. The Red is a new turbo from Forced Performance which externally looks identical to a stock Mitsu IX turbo and bolts up like stock as well.

The Red has been putting out some really impressive power and torque. Spoolup is good enough(30 PSI between 3800-4000 RPM reportedly). On a highly modded IX it is putting out over 530 ft.lbs. of torque at the wheels. I think that they did it on a stock, ported exhaust manifold and a specially ported stock intake manifold(Wilson Manifolds).

 

I noticed that you have listed a catback exhaust as one of your mods. Does this mean that you will necessarily be running a catalytic convertor instead of a test pipe?

 

Yes I will be running a Catalytic Converter.

I currently have a Fuitsubo RM-01A, but I will be changing for something a little more free flowing such as a Kakimoto Hyperfull Mega N1+ Rev.

So the 'Red' is a larger turbo? IE Able to make mroe power?

Also, I need some information on JUN products. What does everyone think of thier cams & cam gear?

 

The 100 Cell Cat I got from Mike and Abby at Mil.Spec is awesome definitely required me to retune for the boost in power.

The FP Red is a 56lb/min turbo but some people claim its pushing as much as 60lb/min. So it flows quite a bit akin to something like the 30 series Garrett turbo's.

JUN has great cams but as most people know your paying a lot for that brand name. I'm not sure how it is in your country but buying JUN parts usually involves many phone calls and weeks of waiting. A more available solution would be cams like the GSC s2's or Kelfords.

I admit some confusion about your goals. You say you want a fast spooling mid range turbo but state your considering a t67 kit which is massive lag but also massive top end. I think you should figure out 3 things to finalize your setup.

1) Rev range you'll be using (4k - 9k)
2) Where you want most of the torque
3) Stroker or not stroker

 

^

Really? 100 Cell Catalytic Convertyer eh. Sounds HIGH FLOW... =P

I was originally thinking about Cosworths, so Im not sure. I have always been a fan for JUN, and I would really like to try and keep my car filled with as many JDM products as possible (being a JDM car, why not? Makes sence..)

In regards to the T67, I was originally considering it, because I was also thinking of going a stroker, etc. But Im unsure If I want to spend that much $$ at this stage.

To be honest, I dont particually want to go much past the standard redline at this stage. I have no plans for a bottom end rebuild, but if something does get damaged, (Rings or something else), Ill consider a rebuild and If I do, I think I would end up going a 2.2L so I could rev a bit more.. (then the 2.3L that is).

A1) Rev range I would like to be using is 3,750 ~ 7,200.
A2) I DEFINATLY would like most of my torque around 4,000rpm
A3) At this stage stock bottom end

Cheers,
Alex

 

Then a small turbo is right for you FP Green and Red both would work well in that environment. The red is more top end and the green is like a stock turbo on crack. If you think you'll grow tired of the power just immediately go for the Red. If you go with a forced performance turbo then remember its going to bolt in just like a typical evo 9 turbo Garrett kits need exhaust manifolds and a downpipe. That being said if you go with a Garrett kit forget about the tomei stuff cause it will go away soon as you bolt on the turbo.

Far as cams go this will highly depend on your choice of turbo. I recommend getting cams that will work with the rev ranges of the turbo you want. Your desired rev range is pretty much on ball with a S1 cam. If you want to rev it out to the stock rev limit 7606rpm then your edging slightly closer to the S2 cam. Basically if you go with a Green or a smaller turbo get the s1. If your getting the Red or a larger turbo get the s2's.

BTW, one omission from your specs is a clutch. I'd definitely recommend having the money saved for a quick clutch replacement with all these planned power adders.

Far as JDM parts are concerned I basically just find out what works. This is especially true when your trying to achieve power out of a budget. As I live in the US its much easier for me to purchase a part from Buschur than it is from a Japanese tuning company. If the names are important to you and your budget can handle it then I guess there isn't any reason you shouldn't buy the parts you wanted.

100 Cell Cat Link:
https://www.evolutionm.net/forums/sh...t=100+cell+cat

I got on that sale which was nice I'd guess you could call around and see if you can get them elsewhere.

 

Thanks for your Advice mate.

I think I may just end up going for the FP red.

Also, In terms of Camshaft selection, I have gotten a price for some JUN 272's with springs, retainers & gears. I wouldent mind a tough sound to the car, but is this stuff too big?

Also, I do have some money set aside for suspension & clutch. I was just looking for a little adivce in the power department.

What is still worrying me though... is camshaft selection (I would prefer to purchase a Cosworth or a JUN cam set), and also, Im wondering whether a inlet manafold/throttle body will make a difference...

Regards,
Alex

 

The Red is basically a 500hp turbo plan your clutch accordingly and thats probably going to mean 6 puck or twin disk. I wont dive into clutch choices it far too personal like intercooler choices.

Between your choice of cams I would definitely go with the JUN set as their performance is well proven, the cosworths i have practically no data on. JUN is an aggressive cam that will idle rough. This brings me to wonder what kind of engine management are you going to use?

I'm not sure i'd bother with cam gears unless you where trying to shift the power as far to the right as possible. That money can be used elsewhere say immediately on your clutch.

A throttle body will yield you a few horsepower and an intake manifold a fair gain up top with usually some sacrifice to the bottom end. I would save mods like those to the very end as its more cost effective to place your dollar bills somewhere else until it becomes a problem.

Whats your plan on fuel injectors? 720cc will probably be fine but I like to go overkill and will be using 880cc on my own car just so I don't suddenly find myself limited by fuel delivery.

Those bills could goto a killer engine management system per say.

98 RON is basically the equivalent to 93-94 octane here in the states. I would expect you to be in the the 400awhp range if everything is installed and tuned.

 

The Cosworth M2 cams might deserve looking into, also the Forced Performance 4R's.

It is often said on here that the grind on the Buschur Racing BF 272 cams is very similar to the JUN 272 grind, but at a significant price saving. Also, the aforementioned GSC S2's are popular in the States as well as in England.

The S1's are on the mild side and their power output levels off after 6400 RPM, although they make good low end and midrange power.

I am not sure how the JUN's and the Buschur BF's run on a stock ECU. So, you'd have to check with Buschur Racing on that issue first.