1999 mitsubishi eclipse gsx auto

[Caseyrobinett_2011]

I just bought my second gsx auto this time I found a "grandma" owned 1999 eclipse gsx auto mostly stock with a crazy 201k miles. Everything is perfectly mint minus small rust spot inside driver side rear wheel well but my question is I found that the exhaust manifold is cracked and one of the bolts holding the turbo on is snapped off its all factory and the turbo has more play than what I feel safe with. I have a complete big 16g and manifold with big FMIC that is not being used would it hurt the car in any way to take all the worn out factory stuff off and replace with the 16g and FMIC if I leave it at factory boost levels? Will the factory ecu manage everything safely? And later down the road I may swap my mild built 7 bolt over to the 99 once I start have problems with the 200k motor in it if I do what is the best ecu to use if I decide to swap and shoot for my goal HP of 400 wheel the factory ecu out of my 97gsx auto or the factory computer in the 99gsx auto? Thanks for any help

 

[Kryndon]

Congrats on the second DSM. Looks clean from the outside.

The car definitely wont run right (both in terms of performance and mileage) if you just replace the turbo with the 16G and a big FMIC. You will need to upgrade to bigger injectors/fuel pump (or rewire) and of course a good tune. The factory ECU wont really know what's going on and it will bottleneck your bigger turbo.

I think, for the time being, find a stock T25 manifold/turbo from a parts yard if possible and run it stock. Start collecting all the necessary bits for a full 400 wheel HP build and do it all at once!

 

[Caseyrobinett_2011]

I'm not wanting to push the high mileage engine I just want to have something to drive and keep it reliable if possible but I don't really have any spare funds right now that's why I was wondering if I just slap the 16g on there and leave the rest stock to the computer to adjust for if it would run I know right now the engine that has the 16g on it is just built on the bottom end and head studs and it ran fine with the 16g but if I'm not mistaken doesn't the 99 have a black box ecu? And is there much difference between the factory 97 ecu and the 99 black box ecu? Thanks for the help

 

[SAKTOINK]

I'm not wanting to push the high mileage engine I just want to have something to drive and keep it reliable if possible but I don't really have any spare funds right now that's why I was wondering if I just slap the 16g on there and leave the rest stock to the computer to adjust for if it would run I know right now the engine that has the 16g on it is just built on the bottom end and head studs and it ran fine with the 16g but if I'm not mistaken doesn't the 99 have a black box ecu? And is there much difference between the factory 97 ecu and the 99 black box ecu? Thanks for the help

I had a similar case to yours. At the time I had the factory T25 and went out of commission, but happen to have a spare Evo316g. That is the only thing that I swapped out everything else was factory even the side mount intercooler. I have been running like this for over a year with no issues. I have a 99 GST. I hope this helps. Congratulations on the buy!

 

[Caseyrobinett_2011]

Any info helps a ton thank you