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Looks amazing, the best Impreza i have seen in this shape. Bet you cant wait to get it back from ET.
That’s very kind of you to say. Yes very much so, it’s been a while since I’ve been in it and I’m itching to get out in it. It’ll be 1000 miles and then back to ET to fit the rotated kit and then final mapping.
That’s very kind of you to say. Yes very much so, it’s been a while since I’ve been in it and I’m itching to get out in it. It’ll be 1000 miles and then back to ET to fit the rotated kit and then final mapping.
Looking forward to reading feedback on its performance after the running in period.
I've only recently picked up my Evo from having an engine build at ET. Took a good while but have to say I'm very happy with the results.
I saw the updates on your Evo on their social
media, looks a very nice build! Yes it has taken a long time for one reason or another. Some of it down to sourcing parts such as the standalone ECU that came from Australia, and some of the machining work to insert the sleeves (again down to materials shortages, not down to AS Performance who did the work and were fantastic). Some of it was down to ET just being so busy and in demand, and they’ve been down one technician for some time now. I’m sure it will be worth it in the long run though.
re-sleeving a 2.5 block to 97.5mm "correctly" with HD custom liners is in general far more cost effective that the current costs of the EJ22 blocks and also has the benefit of retaining the 8 bolt bell housing fixings which resists them flexing in extreme builds .............
totally different to simply de-stroking a 2.5 which doesn't make it any stronger than a normal 2.5 and IMO is of no benefit
or you could simply install custom HD 99.5mm liners in the 2.5 block and have the benefit of the extra capacity and security
What kind of pistons will be used for 2.5 dual avcs engine EJ257 if re-sleeved to 97.50mm without modif the piston top shape? Is the wiseco K602M975 or the RCM2595 pistons ?
I decided to let ET complete the running in miles for me. They took the car to a couple of shows to check all was ok and in doing so put nearly 500 miles on it. Seeing as I’m an 8 hour round trip from them, it made sense to let them continue with the running in and I’ll pick it up when it’s completed. The 1000 miles will be completed this weekend and the car is booked on to the rolling road for final mapping tomorrow.
I’m sticking with the Precision 5530 turbo for the time being, the rotated turbo will be going on in a few months (it’s sat in my garage currently) but I want to use the car for a bit and see how it is on the current setup. ET said they made 580bhp with meth on a 2.1 with good heads/cams, I’d be elated with a similar figure. We will certainly have no issues pushing that turbo on this setup.
We also swapped the Perrin AOS out for an RCM Track Attack as the Perrin has certain design issues that would likely be a problem at this power level (it uses the crank case vent as a breathing point AND an oil drain, which could see oil being blown back up into the AOS). We could have got round it by modifying the Perrin, but I thought it better to just swap it out for something proven.
With all being well, and no issues with mapping tomorrow, I should be able to collect the car Friday, so keeping fingers crossed. I’ll put up the RR graph as soon as I have a copy of it.
One final piece is a “Hand built by Engine Tuner” plaque in the engine bay that ET are going to put on all their special builds. Mine is the first which I thought was a nice touch.
Last edited by Danjo; 09 October 2022 at 11:03 AM.
No sleep for you tonight then mate!
Exciting times
Ha indeed! Can’t wait to see what she makes, even if she’s not running to her true potential. Picking it up Friday so Thursday is definitely going to be a long night .
Well the car has now been mapped, and I’m VERY happy with the result. There’s a reason I went linered 2.5 over 2.35, and that’s because I wanted to retain as much torque as possible. Not only did Martyn not disappoint, he’s blown my mind.
With a meth mix and a “little” Precision 5530 stock location turbo it’s made 560bhp and 600lbft of torque! The torque curve on the graph is mental. Far, far exceeded my expectations!!
Well the car has now been mapped, and I’m VERY happy with the result. There’s a reason I went linered 2.5 over 2.35, and that’s because I wanted to retain as much torque as possible. Not only did Martyn not disappoint, he’s blown my mind.
With a meth mix and a “little” Precision 5530 stock location turbo it’s made 560bhp and 600lbft of torque! The torque curve on the graph is mental. Far, far exceeded my expectations!!
05 September 2022, 02:56 PM
Bet you cant wait to get it back from ET.
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