Why all the "big" turbo kits @ low boost

[cdrazic93]

Originally Posted by Ironsquid

im done with it, too small

[cdrazic93]

Originally Posted by jamesm

That's what I'm thinking, but id hate to have to upgrade again .

Are you really wanting to use the extra overhead the 3582 offers...thats rated for 650 hp right? built block right there, tranny swap, rear axle and diff...thats a good 20k in parts, then add labor, if you wanted to use the 3582 for its full potential. unless you have future track only plans for it, I wouldnt, but thats just me! By no means am i as knowledgeable about what will suffice for a DD at 550+ whp.

[jamesm]

Originally Posted by Ironsquid

james you can have my 35r im done with it, too small, going 42101 twin scroll

I'll hold you to that .

[woode]

The low boost and lag is horrible.

/sarcasm

[lexusb3]

Originally Posted by Ironsquid

james you can have my 35r im done with it, too small, going 42101 twin scroll

U made me spend money -_- since that video

[cdrazic93]

Originally Posted by Ironsquid

james you can have my 35r im done with it, too small, going 42101 twin scroll

Cancel that 3076, becausefreeturbo

[stevo585]

Originally Posted by Ironsquid

I hope this is a troll post.

What sounds very cocky? Why even say that? Just because you need the biggest turbo possible doesn't mean I do. I came from a TD04 WRX that had a "mountain" of torque. Full spool before 2.5-3k is what I'm looking for.

Although hard to believe from a 2.0L, from the posts it appears this motor spools "big" turbos pretty quickly. Enough said. End of story. No need for a small turbo.

Thanks for the responses.

[mrk1]

Originally Posted by stevo585

What sounds very cocky? Why even say that? Just because you need the biggest turbo possible doesn't mean I do. I came from a TD04 WRX that had a "mountain" of torque. Full spool before 2.5-3k is what I'm looking for.

Although hard to believe from a 2.0L, from the posts it appears this motor spools "big" turbos pretty quickly. Enough said. End of story. No need for a small turbo.

Thanks for the responses.

I love the td04, sure its not going to break any record buts its fun. I have a really tired one on the back shelf at my shop and I'll admit I held it in the engine bay when I made my manifold. Those little guys with a big down pipe sound great.

[stevo585]

Originally Posted by jamesm

the reason is because this car is very knock limited on pump gas, and a lot of people don't have or want e85. bigger turbos flow more air for a given boost pressure. so you make more power on less boost, all while moving cooler air which in turns helps to raise the knock threshold. combined with direct injection and 12.5:1 compression, lag is hardly an issue (the 35r i just tuned, with very little optimization, spools 14psi @ 4.5k rpm for instance). these cars can spool a much larger turbo much quicker than what you'd expect if you come from the evo/wrx world.

beyond that, you have the overhead to produce craaaaaazy power on e85 should you choose to. larger turbos are also easier on drivetrain parts, as they tend to ramp in the torque curve more progressively than a smaller turbo. lots of immediate torque at low rpm does little more than turn tires into vapor and break stuff.

so there are lots of reasons, and having bought a 'small' turbo (gtx2867r) and tuned larger ones, i'll be swapping mine out for something much larger very soon. the benefits far outweigh any perceived drawback, most of which are just a consequence of applying common knowledge that doesn't apply to the fa20. this engine breaks rules.

Thanks. A very informative post. What I was asking for.

[stevo585]

Originally Posted by mrk1

I love the td04, sure its not going to break any record buts its fun. I have a really tired one on the back shelf at my shop and I'll admit I held it in the engine bay when I made my manifold. Those little guys with a big down pipe sound great.

Same here. Felt like V8 power instant torque. No sense of lag at all really on the 2.5L. Not looking to break records, just looking to make some nice usable power without having to upgrade the fuel system, drive train, etc.

Honestly I like to drive not work on broken cars or drop my 401k into it

[Ironsquid]

Originally Posted by stevo585

What sounds very cocky? Why even say that? Just because you need the biggest turbo possible doesn't mean I do. I came from a TD04 WRX that had a "mountain" of torque. Full spool before 2.5-3k is what I'm looking for.

Although hard to believe from a 2.0L, from the posts it appears this motor spools "big" turbos pretty quickly. Enough said. End of story. No need for a small turbo.

Thanks for the responses.

You mention cocky, Ill refer you to your original post. Something about enjoying lag something something.

I know who you are btw, we met a couple weeks ago and your "comments" during our Orlando 86 meet werent very thought out.

I will give you a thought. If you manage to make 300 whp with full spool at 2500 rpm let me know what size and brand tires you plan on hooking with.

[jamesm]

Originally Posted by cdrazic93

Are you really wanting to use the extra overhead the 3582 offers...thats rated for 650 hp right? built block right there, tranny swap, rear axle and diff...thats a good 20k in parts, then add labor, if you wanted to use the 3582 for its full potential. unless you have future track only plans for it, I wouldnt, but thats just me! By no means am i as knowledgeable about what will suffice for a DD at 550+ whp.

Just because a turbo is good for 650whp doesn't mean it isn't great for less than that.

[stevo585]

Originally Posted by Ironsquid

You mention cocky, Ill refer you to your original post. Something about enjoying lag something something.

I know who you are btw, we met a couple weeks ago and your "comments" during our Orlando 86 meet werent very thought out.

I will give you a thought. If you manage to make 300 whp with full spool at 2500 rpm let me know what size and brand tires you plan on hooking with.

Ah right your car is the same color as a ZX6r I remember. Cool color. Anyways well share the knowledge? I'm just trying to learn about an FA20 on boost. It apparently doesn't have the lag issues of other subaru (EJ) motors. I get it now.

I'd imagine you need RS3's in 245+ or the like to hook up but would you not have the same issues @ 400-500 whp no matter what tire you use? Ever see a corvette tires yeah they are massive for a reason. My Dad has one and they still can spin.

[SnapOv3st3r]

PTuning system comes with a GT3076.

/thread