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Fast Hatch to Mega Fast Hatch enginetuner style!!

Old 26 February 2013, 12:37 AM
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jaypSTi
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Default Fast Hatch to Mega Fast Hatch enginetuner style!! NOW FOR SALE!

I have owned my Subaru Impreza STI Type UK Hatchback now since June 2008. It was my first subaru after owning a number of "hot hatches" incuding a clio 182 and focus st. I always wanted a 4wd car but was never really a fan of the shape of evo's or subaru impreza's. So after waiting years for a 4wd focus rs that never arrived. The impreza hatchback seemed to be the perfect choice.

I would now love to show a load of pictures of when I first purchased the car, but a broken hard drive with no backup has made that impossible.

Within a few months of ownership, I soon got the modifying bug. First up was a prodrive performance pack which took the standard 300bhp car up to 330bhp with a load more torque.
I then wanted more and more power but at the same time it was becoming clear that there could be a major problem brewing. On the american forums there were many people reporting broken piston ringlands.
It then came to light that it was a major widespread problem that we now all know about
This made me look at my options, either I get rid of the car I have always wanted with no real alternative on the market in its price bracket, or I get this problem fixed.
I looked around and came across enginetuner. They were fairly local in comparison to other respected tuners on this forum. So I soon made contact with Alan and relayed my concerns about my chocolate pistons. He was full of information and invited me up to the garage to take a look around with no obligation whatsoever. After a full tour of the garage including engine workshop and dyno room. We sat down and discussed my options over a cup of tea. He suggested I have my engine forged with wiseco pistons and H-beam rods. Along with a new rcm oil pump, acl bearings, arp headstuds, cosworth gaskets and cosworth baffled sump. Alan said that along with a remap from Martyn this would give me my peace of mind back, with plenty of potential for bigger turbos and other mods in the future. It was a no-brainer for me, a few days later I left the car in their capable hands and drove off in one of their courtesy cars.
Fast forward a few weeks and I am back picking it up. Time to run it in, a base map installed and Alan has done the first 50 miles. So I have 950 miles to go until Martyn works his magic on the ecu. This didn't take long before I was back up to plymouth itching for the final remap. Before remapping a new hayward and scott exhaust and AEM caik was installed.
The result 355bhp/360ftlb

I was happy with the power for now and wasnt scared to use it anymore. So I turned my attention to handling.
A visit to litchfield imports resulted in full handling setup from their famous type 20 hatch. Including AST coilovers, whiteline bushes, front and rear arb's, front strut brace, and much lighter than standard rota g-force alloys with some new rubber. They then spent several hours getting the alignment absolutely spot on.

It was then service time and I ended up back at enginetuner. This for me always ends up being more expensive than it should be. Alan and Martyn are always keen to let you know what projects they are working on. Which makes you hungry for that next power hike!
Whilst doing the service and fitting my car with more suitable performance friction disks and pads. Martyn gave me some ideas for the next step. Which included a SC46 billet turbo, Cosworth front mount intercooler, ECUTEK 800cc injectors, bosch fuel pump with swirl pot, perrin intake, catch tank and a helix organic clutch. The plan was to get more power but keep the engine within its safe limits. So the target was set at 450bhp with similar torque. Once again I couldn't resist and left the car with enginetuner.

A few weeks later after a few problems getting certain parts I got the anticipated phone call to pick her back up. Here was the result



The blue line is on straight vpower @ just under 1.5bar. The red line is my original graph from the standard car with ppp map.

A couple of months later and ecutek had released RaceRom for my car. This allowed me to have dual switchable maps, flat foot shifting, auto-blip on downshift and launch control. So off I went to plymouth again
This time I asked Martyn to do an 8% methanol map as my 2nd map on racerom. Why 8% you ask? Well for ease of use. 1x5ltr jerry can of methanol to a 60 litre tank.
The result was amazing 495bhp and over 500ftlb of torque @ 1.6bar (can't find the graph)
Here are some pictures of the car just before japfest 2011






My car has now done just under 40000 miles and over 25000 miles on the forged engine. It hasnt skipped a beat and is a daily driver for me and the missus. Other than the oil every 3000 miles, nothing has been changed on this car for nearly 2 years.

This brings us to this new project
The car is now 4 years old and considering I havn't kept any car thats more than 2 years old its done well to keep me occupied. I started looking around to see what car might take my fancy. I literally couldnt find anything in its bracket for practicality, power and all out fun. Maybe I didn't look in the right place but can anyone find a 5 door hatchback with 400-500bhp, 4wd and still does 30mpg on a long run?
So thanks to top gear and mr. clarkson revealing to my wife that the impreza wouldn't be available in the uk anymore. She told me it might be an idea to keep it and maybe spend some money on improving it even further. Who am I to argue with the missus?

So last week I once again contacted Alan Jeffery @ enginetuner and told him that my missus wanted me to give him all my money. Funnily enough he obliged and invited me up. I had another tour of the garage and another cup of tea, while discussing the latest developments and seeing yet another forged hatchback flying out the door. Once again I was to leave my car at enginetuner. This time no courtesy car available to get home because they are so busy nowadays. No problem Alan said, I will give you a lift. Thats right, chauffeur driven 75 miles home by Mr. Jeffery himself.
I'm not going to reveal the whole spec of this new project straight away.
But we both agreed that the ej257 was at serious risk if we wanted to go higher than 500bhp so that will be coming out.
It's replacement an ej22 strokered to 2.35
With the help of Alan and some pictures I hope to keep this thread updated stage by stage.
Thanks for reading.

Last edited by jaypSTi; 06 February 2014 at 08:22 PM.
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Old 26 February 2013, 12:10 PM
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Sounds like a fantastic project! Hatchback has been on my list of potential track cars for some time now.
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Old 26 February 2013, 01:51 PM
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Thread subscribed to. Good luck with the project.
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Old 26 February 2013, 03:39 PM
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What power are you aiming for ? Is the car for road or track?
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Old 26 February 2013, 04:06 PM
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Subscribed good work with the car bud, I look forward to the outcome
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Old 26 February 2013, 04:29 PM
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Damn, this has given me so many ideas for mine. 500bhp sounds nice too let alone 500+! Good luck
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Old 26 February 2013, 05:14 PM
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Originally Posted by matt-c View Post
What power are you aiming for ? Is the car for road or track?
It will mainly be a road car, but I think it will have to visit the track and strip at some point to see what she is capable of.
No specific power figure being aimed for. I know it will be well over 500bhp, but ultimately I want to try and keep it driveable for the road, with other maps at my disposal for a bit of fun.
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Old 26 February 2013, 05:39 PM
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Al be following this.
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Old 26 February 2013, 09:02 PM
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Jasus, bet ET loves you, must of spent 10's of thousands already
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Old 27 February 2013, 05:56 PM
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Looking forward to this thread, but without wishing to "poo poo" your build, I'm unsure what is driving you to go from 495bhp to what 600? 650? in a road car, these are going to be massively expensive horses to add to a car that can already out run almost anything it comes up against........
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Old 28 February 2013, 08:51 AM
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subscribed, mine is running a 2.35 built by engine tuner. Build thread on here somewhere, you wont be disappointed, Alan and Martyn know their stuff.
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Old 28 February 2013, 10:20 AM
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Steve u gona manage to keep your car now or u still having to sell up
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Old 28 February 2013, 06:08 PM
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Very subtle styling.
Wouldn't expect that much power from it. I bet it surprises a few people
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Old 28 February 2013, 11:31 PM
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Alan Jeffery
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Originally Posted by bioforger View Post
Jasus, bet ET loves you, must of spent 10's of thousands already
Jay is close to making our Christmas card list..
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Old 28 February 2013, 11:32 PM
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Originally Posted by Alan Jeffery View Post
Jay is close to making our Christmas card list..
lol
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Old 01 March 2013, 01:39 AM
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Old 03 March 2013, 10:47 AM
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Subscribed.
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Old 03 March 2013, 11:21 AM
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just wow
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Old 13 April 2013, 12:14 PM
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A little update......

All the parts have started to arrive and things are coming together nicely.

2.35 Stroker short block looking shiny and new....
Mahle pistons, cosworth rods, ACL Bearings, 14mm conversion.



Rear thrust conversion, new heat treated crank


Head work including Cosworth plus 1mm Inconel valves.


These should hold it together...


Where has the dirt and grease gone?


Plated bolts to finish off


Thanks to Alan for the update and pictures.
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Old 24 April 2013, 02:26 PM
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Engine back together and more parts coming in........

Reconditioned inlet manifold


RCM Fuel rails


Teaser pictures of shiny bits




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Old 24 April 2013, 02:44 PM
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Wow sounds like an amazing build and looking forward to watching it unfold !
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Old 28 April 2013, 10:54 AM
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Subscribed!
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Old 28 April 2013, 11:32 PM
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did you buy the short block already built? if so can i ask where from as im looking at a similiar build to you and how much it was?
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Old 28 April 2013, 11:37 PM
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Very nice, but threads like this make me cry when I look at my engine
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Old 28 April 2013, 11:44 PM
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Originally Posted by Gava View Post
did you buy the short block already built? if so can i ask where from as im looking at a similiar build to you and how much it was?
enginetuner built the short block. You would have to ask them how much just for the short block. I only have an overall cost of each separate part and total labour.
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Old 28 April 2013, 11:45 PM
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ok cool thats great cheers mate
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Old 09 May 2013, 04:32 PM
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Looks like an amazing build! Looking forward to seeing this progress buddy.
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Old 09 May 2013, 04:53 PM
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NICE.SJ.
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Old 09 May 2013, 04:56 PM
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I wish my missies would tell me to chuck more money at mine. the car look great by the way mate. :-)
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Old 09 May 2013, 05:14 PM
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The engine has been ready for a while now. Something important is missing though.......



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