Originally Posted by qoncept (Post 1024119)

Basically either you're going to be happy with the power with very minor gains or you need to spend a lot of money either on FI or a build, like any other NA car.

Originally Posted by jpit (Post 1023828)

For those who have not had a chance to read this, you should take a look. Mike Kojima is one of the top modifiers in the US and he relates some of the problems in installing new exhaust parts on this engine. Seems that the ecu is the root of most of the problems.

http://www.motoiq.com/magazine_artic...strations.aspx

Originally Posted by jamesm (Post 1024068)

i disagree. a tune is good for 10-15whp. this thing needs more than 10-15whp to keep up with minivans, much less be 'fast' by any reasonable standard.

i can never figure out why people throw thousands of dollars at exhausts and tunes and intakes just chasing a few hp from an already fairly well optimized engine. by the time you have full exhaust, a tune, an intake and some pretty wheels you could have gone FI and actually be working with something substantial.

it's baffling to me, but it's not unique to the 86. miata guys will throw thousands into built 2.0 strokers to make less power than the most basic bolt on FM kit. just doesn't make much sense i guess.

but hey, the wheels are pretty :bonk:

Originally Posted by Trashed675 (Post 1024037)

Just give it time boys. I remember when the GTR first came out, it was supposed to be "untuneable" and the ecu was supposed to be totally locked down. 3x the horsepower later, i think the tuners have cracked it.

Given the twins have only been available for about a year now, I'm sure things will get better.

Originally Posted by jamesm (Post 1024068)

i disagree. a tune is good for 10-15whp. this thing needs more than 10-15whp to keep up with minivans, much less be 'fast' by any reasonable standard.

i can never figure out why people throw thousands of dollars at exhausts and tunes and intakes just chasing a few hp from an already fairly well optimized engine. by the time you have full exhaust, a tune, an intake and some pretty wheels you could have gone FI and actually be working with something substantial.

it's baffling to me, but it's not unique to the 86. miata guys will throw thousands into built 2.0 strokers to make less power than the most basic bolt on FM kit. just doesn't make much sense i guess.

but hey, the wheels are pretty :bonk:

Originally Posted by wootwoot (Post 1024671)

Reliability. We have no idea how the engine will hold up to boost. I would rather have less power and increased longevity and reliability than more power at the expense of either.

Originally Posted by l0aded (Post 1024514)

Sad time to live with California gas.. sigh. I'm assuming octane boosters don't really help either.

Originally Posted by wootwoot (Post 1024671)

Reliability. We have no idea how the engine will hold up to boost. I would rather have less power and increased longevity and reliability than more power at the expense of either.

Originally Posted by mad_sb (Post 1024312)

Mr Kojima has a lot to learn about 32 bit subaru ecu's. It's no mystery. It's fuel trims and learned knock correction. Simple as that. If he bothered to buy and Ecutek cable from JV and actually use it to datalog while they were doing all the parts swapping and dynoing, he would have very clearly seen what was going on.

Just sayin, dude ain't all that.

Originally Posted by jpit (Post 1025256)

Don't you think John did that when he was there tuning it?

Originally Posted by sw20kosh (Post 1024800)

Torco Fuel Accelerator fuel additive works very well. It uses MMT as a detonation suppressant. My tuner said one bottle of Torco in a tank was able to produce the same power as running straight 104 octane gas on his dyno.