I have 20g, want 16g or n/a

[caseyrock]

I just picked up a HAHN Super 20g turbo and manifold for my 420a OZ eclipse. Got a super good deal on it and it has around 600 miles and dyno time.

But I'm not sure it's what I want...It's for my automatic daily driver. I think I would be more happy with something smaller such as a 16g or even a 15g turbo. Mainly because of the spool time. This bottom end will probably never get built so I won't really need a turbo that supports 450hp. Or I could keep things simple and just stay N/A. An AF/X ecu and a set of CROWER or DELTA cams plus a CAI and header would do just fine (I'd like to keep the stock exhaust). I think that it would cost around the same to do either turbo or N/A.

I'd also like to know, If I stay N/A, how high will that stock bottom end rev before it sends a rod through the block? Has anyone used an AF/X ecu on an automatic?

What would you guys do, any opinions? Don't tell me to sell the car and get a GST/X, I'll get angry I have an old Pony project and don't want to deal with another import as a project.

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[mb3000]

Not too sure what you're asking there.

 

[RadDsm]

Sell it and get a GSX.

The turbo or N/A is a big difference. If you stay N/A, it'll most likely be more reliable.

I'd only turbo it if you have a spare car.

 

[caseyrock]

I do have a spare car, my project car But I'm away at college and don't need to drive so I though this would be the perfect opportunity to get some performance things done to the eclipse. The paint came great on it and I've already done the interior and have suspension parts on the way, so it's time for the motor. I'm pretty much asking what will be best for the little automatic, a little extra n/a ass or a few pounds of boost?

 

[kenuwine4g63]

My bro has a 420a with some nice mods
Bored .20 over
264/264 delta regrinds
CAI
Aftermarket Headers, which leads all the way to the back witha muffler tip(no muffler, cat, or resinator)
thats really about it over the stock motor. From stock its ok, not really what you want out of a rebuild. Cant really feel too much of a difference.

If I were you i'd boost it but not really heavy, that 15g should spool very quick and be like a little zip around here and there. GO for it!

 

[caseyrock]

My bro has a 420a with some nice mods
Bored .20 over
264/264 delta regrinds
CAI
Aftermarket Headers, which leads all the way to the back witha muffler tip(no muffler, cat, or resinator)
thats really about it over the stock motor. From stock its ok, not really what you want out of a rebuild. Cant really feel too much of a difference.

If I were you i'd boost it but not really heavy, that 15g should spool very quick and be like a little zip around here and there. GO for it!

How are those cams?? Where is the power at and how's the lope? You should have gone at least 10.5 comp if you rebuilt for all-motor. Try the AF/X ecu, I only hear great things about it (other than Howell's customer service). I think that little 15g would shag ass from stoplight to stoplight too!

 

[cola]

theres a lot of info on what youre asking...heres a good starter and you can search these forums too to find what you need

420a Turbo Build - Mitsubishi-Forums.com

 

[tron2119]

BOOOOST IT! I think you will be much happier if you go the 15g or another quick spooling turbo.

 

[caseyrock]

theres a lot of info on what youre asking...heres a good starter and you can search these forums too to find what you need

420a Turbo Build - Mitsubishi-Forums.com

I know what I need to boost a car. I know what I need to stay N/A. I'm not going to build the engine. Just bolt on stuff, cams would be the only internal mod. I'm asking for opinions, a couple product reviews, and to see if someone will trade me turbo's. But thanks anyways, I've searched and found all of that information already.

BOOOOST IT! I think you will be much happier if you go the 15g or another quick spooling turbo.

That's really what I'm leaning towards. Get the HAHN s15g with the internal wastegate and the BOV right on the cold side of the turbo and just get the downpipe and air piping (no intercooler setup) from hahn. Super simple. It probably wouldn't be more than 180-190hp but it would come on quick and be really fun. Would I just be fine with an FMU? Would it come too close to maxing out the injectors?

Someone have a HAHN super 15g they would like to trade me?

 

[caseyrock]

Would I be fine just running a s15g, SMIC, 12:1 FMU, wally 255, and MISSING LINK on my 99?

Can I use the missing link instead of the FCD on my 99?
Can I use an 8:1 FMU since I will be using such a small turbo on only around 7lbs of boost?

 

[95TalonOwner]

Would I be fine just running a s15g, SMIC, 12:1 FMU, wally 255, and MISSING LINK on my 99?

Can I use the missing link instead of the FCD on my 99?
Can I use an 8:1 FMU since I will be using such a small turbo on only around 7lbs of boost?

I would still stick to a 12:1 to be safe, and an FCD is more reliable than a missing link even though both will work. Subsequently I have a 12:1 from hahn for sale if needed.

 

[kenuwine4g63]

How are those cams?? Where is the power at and how's the lope? You should have gone at least 10.5 comp if you rebuilt for all-motor. Try the AF/X ecu, I only hear great things about it (other than Howell's customer service). I think that little 15g would shag ass from stoplight to stoplight too!

Well the cams arnt bad, its my brothers build. I dont know if he went with a higher compression but i dont think he did. And yes your right he should've but hey....Honestly you cant really tell the difference as far as when the car starts to pick up(well i cant) from the cams, but there is a difference through out the power band from stock its a bit quicker. He has 264/264 delta regrinds, the lop isnt really hard but its there ,sounds real decent which is good its not overkill. But since the car is not tuned i told him as soon as he does tune it he should feel the gains from the cams in the mid rpm range. And yes a 15g should do you good from light to light all you need is a quick spool up turbo and that should fit perfect.

 

[caseyrock]

I would still stick to a 12:1 to be safe, and an FCD is more reliable than a missing link even though both will work. Subsequently I have a 12:1 from hahn for sale if needed.

I'm picking up a vortec 12:1 for $20, can you beat that shipped? What particular version of the FCD do I need? And the only reason I am thinking about the missing link is because of the price. I'll be in boost pretty much all the time so I think I need to run a sidemount. I'd really rather not though. Any thoughts on that?

Well the cams arnt bad, its my brothers build. I dont know if he went with a higher compression but i dont think he did. And yes your right he should've but hey....Honestly you cant really tell the difference as far as when the car starts to pick up(well i cant) from the cams, but there is a difference through out the power band from stock its a bit quicker. He has 264/264 delta regrinds, the lop isnt really hard but its there ,sounds real decent which is good its not overkill. But since the car is not tuned i told him as soon as he does tune it he should feel the gains from the cams in the mid rpm range. And yes a 15g should do you good from light to light all you need is a quick spool up turbo and that should fit perfect.

How were the price on those Delta cams? Problem is finding a HAHN s15g turbo. I've had a couple offers for evo 16g turbos but I need something T3 flanged to go on the HAHN manifold. I can finally post in the classifieds tomorrow so hopefully that will help. Are there any other websites I can list my turbo on for a trade?

 

[caseyrock]

Btw HAHN just sent me a reply email. I asked how the s20g will do in the 420a and they said that it will make 6psi around 2500-3000 rpm. Does that sound about right?


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[El Cuervo]

I'd say stay N/A and slightly build it or if you want forced induction, then supercharge it. Do something different. As you mentioned earlier, you are not planning on high HP or forging the short block. This way, you could keep your Low end power or add a bit extra to your power band instead of going turbo and sacrificing some low end.

 

[kenuwine4g63]

How were the price on those Delta cams? Problem is finding a HAHN s15g turbo. I've had a couple offers for evo 16g turbos but I need something T3 flanged to go on the HAHN manifold. I can finally post in the classifieds tomorrow so hopefully that will help. Are there any other websites I can list my turbo on for a trade?

Um, I want to say 175 to regrind them but im not totally sure. When he gets off work i'll ask him and send you a pm.

Btw HAHN just sent me a reply email. I asked how the s20g will do in the 420a and they said that it will make 6psi around 2500-3000 rpm. Does that sound about ri

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Yes that sound about right.

 

[caseyrock]

I'd say stay N/A and slightly build it or if you want forced induction, then supercharge it. Do something different. As you mentioned earlier, you are not planning on high HP or forging the short block. This way, you could keep your Low end power or add a bit extra to your power band instead of going turbo and sacrificing some low end.

I read up on supercharging the 420a. That takes a lot of fab work because there isn't an actual "kit." I'm saving that for the project 'stang. That small s15g turbo will make boost about the same time that a s/c will....and cost a lot less and be a lot easier to do. I won't be sacrificing my low end because that's where the 15g will make power.

 

[caseyrock]

HAHN's customer service blows. I emailed them again asking for separate pricing on the downpipe and late fuel system and to do a breakdown of what is included in the late fuel system, the reply i received was....."Sure thing. $500"


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[El Cuervo]

I read up on supercharging the 420a. That takes a lot of fab work because there isn't an actual "kit." I'm saving that for the project 'stang. That small s15g turbo will make boost about the same time that a s/c will....and cost a lot less and be a lot easier to do. I won't be sacrificing my low end because that's where the 15g will make power.

That's true that there isn't a kit for your car and it could be much more expensive going super as to going turbo. However, you will sacrifice low end torque. A lot of people think that they don't but they actually do. Just as a supercharger is a parasite on the engine, a turbo is a huge cork. Not a power robber but a power restrictor on vacuum.
Regardless what turbo you have, there will always be lag. Unless you are comparing the turbo to a centrifugal S/C, then yes, turbos can be more responsive but a positive displacement S/C, now that a different story.
Either way, this is something completely different and I don't want to turn your thread into a S/C vs T/C. Just thought I give you some Ideas on what you could do as oppose to telling you to sell your car and get a GSX. I personally do like the 42OA platform.

 

[caseyrock]

That's true that there isn't a kit for your car and it could be much more expensive going super as to going turbo. However, you will sacrifice low end torque. A lot of people think that they don't but they actually do. Just as a supercharger is a parasite on the engine, a turbo is a huge cork. Not a power robber but a power restrictor on vacuum.
Regardless what turbo you have, there will always be lag. Unless you are comparing the turbo to a centrifugal S/C, then yes, turbos can be more responsive but a positive displacement S/C, now that a different story.
Either way, this is something completely different and I don't want to turn your thread into a S/C vs T/C. Just thought I give you some Ideas on what you could do as oppose to telling you to sell your car and get a GSX. I personally do like the 42OA platform.

I'm not going s/c my car. I'm not even looking for the power of a GST. I'm just looking for a little more tug than what I have now. That small turbo will go great with my goals. I'm saving my money to build a real car with a real motor, and that's a v8 Mustang. I'm not looking for anything crazy, time consuming, or "different" right now. That's why I'm not building my motor, staying low boost on a small turbo, and I'm not using a s/c. Thanks for the input.

 

[caseyrock]

I like the HAHN s15g because it has the built in BOV and water ports so I wouldn't need a turbo timer and instal would be a snap and it would give me the power goals Im looking for.


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Looking around on 2gnt and people say that the s16g makes low boost around 2500rpm. I want quicker spool, show me a s15g!