What do you think about this engine in an EXO?

[Garage Dweller]

1994 Mitsubishi Eclipse/Talon-20k invested, tuned to 340WHP on pump gas @16 PSI boost by UMS Tuning. 10k miles on $6,000 engine build. AEM engine management system. Balanced 1991 6-bolt block,SRP 9.2-1 pistons, Eagle rods, Ferrera valves and springs, HKS 263 degree cams, ported and polished head, decked block, metal head gasket, AEM cam gears, Unorthodox engine dampner, Extrude Honed intake manifold, RC 60mm trottle body, RC 550 injectors, AEM fuel rail, SX fuel pressure reg. Walbro 255 LPH pump, Blitz air intake, 20G turbo, XS Engineering front mount intercooler, full 3 inch Thermal R&D exhaust, Tial external wastegate, Tial blow off valve, Magnecor 8.5mm wires, B&M engine oil cooler, Quaiffe limited slip diff., AWD equal length axles, all polyurethane suspension and engine mounts, Fluidyne radiator, FAL low profile fans, Baer brakes, S.S. lines, slotted and cross drilled rotors, front and rear strut bars, DSS coilovers, carbon fiber hood, have most original parts, all reciepts and maintenance, laptop included for programming have extra parts included 16G turbo, HKS VPC unit, Greddy Profec boost controller, MSD ignition, AEM ingnition, old intercooler from previous mods before AEM EMS installed $5,900 or best offer.

[VR4 Shaun]

That setup has much more potential than 340whp. The 263 duration cams and extrude-honed stock intake manifold definitely are holding it back. But otherwise that engine has been properly prepared and will take a lot of beating for a long time.

AEM engine management can be difficult to dea with. Knowing or having a tuner that is good with AEM makes it easier. My opinion is to sell the AEM and use a more user-friendly tuning platform such as ECMLink.

I would NOT use that Unorthodox crank pulley. Either a Fluidampr or a stock unit so you have the proper damping of the crankshaft vibrations.

If you purchase that car complete just for the engine, wiring harness and ECU you can easily get your money out of it on the rest of the parts.

[Garage Dweller]

The owner said that it has been detuned to the 340. But he said that he had to mix racing fuel for the 386hp tune that he first had and it was a PITA.

About the AEM tuning. Will I even need to mess with any tuning provided it is runing properly when I install it? How often do you have to mess with these things?

I think I noticed that you are only in Ohio, Indiana isn't that far..... I may have to find out what kind of beer you drink....LOL !!!!

[VR4 Shaun]

The funny thing is I live in Indiana! But I am from Cincinnati and where I live is a scant 20 miles from Cincy so I don't bother putting Aurora, IN....

I have no experience with AEM engine management. What I know about it is purely from other people's experiences with it. Technically you should be fine with the tune that is already in the ECU.

With the supporting modifications present on that engine, 368whp should be no problem on pump gas. If the car has a small intercooler or the fuel lines are not upgraded from the factory size then yes it would be difficult to squeeze out 368whp. Remove the restrictive factory banjo bolts in the fuel system, maximize the intercooler and get a decent set of 270 degree duration or larger cams and 400whp would be no problem.

[Garage Dweller]

Do you think that 10k miles with the unorthodox pulley setup could have caused any problems already?

[VR4 Shaun]

It could but likely did not.

[Gage]

I will introduce a random thought to this: There is a master tuner of Evo's and 4G63's who lives near me. Have you heard of Mellon tuning? I've met the guy several times. If anyone ever needed a tuner he might be someone to consider.

[Garage Dweller]

Thanks Gage, I may need a tuner later but now the reason I asked about the motor is because I am trying to figure out if I should purchase a motor already built or a nice new stock rebuild for 1/2 the price and consider later upgrades.
I think Shaun is leaning towards the nicely built engine that I posted. The problem is the $800 shipping fee that is KILLING me.:thumbdown2:
Later

[VR4 Shaun]

I like building my own stuff. If you have the means to do the work yourself and the desire then the savings is just great. Let's you have more money to go even faster. LOL

For $800 I could procure an engine and totally rebuild it using stock replacement parts. But it would be more work than buying an already freshened or built engine.