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Old 07-18-2008, 09:15 AM   #1
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Default 14 or 16?

I've pretty much decided on a DSM turbo for my project but I'm having trouble deciding which one to get. My goal is 200whp.

The 14b will spool quickly, but I'm afraid it will run out of breath at the top end. The small 16g will definately have enough breath but the spool will suffer.

I think what I will do is keep searching for both and buy whichever one I find for the right price first, unless there is some reason to stick to one over the other. A little searching didn't reveal many people running either one, but I got a couple dyno graphs that lead me to believe I won't have any problem with top end on a 14b.

Does all this sound like good reasoning?
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Old 07-18-2008, 09:22 AM   #2
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don't worry. It won't run out of breath anywhere near 200whp. I put down 209 on the lowest rating dyno in existence, which is about 241 on a dynomax dyno, and I've still got a few more psi to play with.

Edit: I meant dynojet

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Old 07-18-2008, 09:25 AM   #3
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That is exactly what I wanted to hear.
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Old 07-18-2008, 09:57 AM   #4
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It'll make your goal, with little room to wiggle when you get bored
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Old 07-18-2008, 10:40 AM   #5
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How about a t25?
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Old 07-18-2008, 10:43 AM   #6
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SR t25 would be a good choice too but you can get 14b's for dirt *** cheap. The one I'm running was either $75 or $80 and I've bought them in the past for the same $.
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Old 07-18-2008, 11:22 AM   #7
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Quote:
Originally Posted by SloS13 View Post
you can get 14b's for dirt *** cheap.
Bingo

the DSM guys take them off and replace them with bigger ones so they pretty much throw the old ones away it seems.
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Old 07-18-2008, 11:50 AM   #8
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Yeah, the T25's are even more disposable.

On my talon (with my old 2.0) held 17-18psi to 7,500rpm with a 14b. Small 16g held more like 20psi to the same. Both should work great for your goals. If you get a good deal on the 16g go for it. They spool almost exactly the same. If you want amazing spool get a T25 or 13g (flows a little more than the T25).
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Old 07-18-2008, 12:04 PM   #9
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The T25 confuses me. Most of the ones I see for sale are T25/28 or other hybrids. They also come in a bunch of different A/R ratios, right? The 14b is pretty simple as they're all the same from what I can tell.
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Old 07-18-2008, 12:22 PM   #10
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Don't confuse DSM T25's with SR T25's. Totally different turbos.

DSM T25's run out of breath quick but will spool even if your car is shut off, as long as there's a breeze.
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Old 07-18-2008, 12:25 PM   #11
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Yikes, sounds like I'll be better off to stick with a 14b. No confusion there, and the we know it will hold boost to redline.
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Old 07-18-2008, 06:28 PM   #12
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If you find a great condition 14b for a good price, go for it. Otherwise, I'd go for a small 16g. I love mine, even at a piddly 9psi. I'm waiting as long as I can stand it before upping the boost, but like knowing that my power sky isn't set by the turbo.
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Old 07-18-2008, 06:32 PM   #13
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14b will be fine, i wouldn't bother with a mitsu t25
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Old 07-18-2008, 11:03 PM   #14
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If you find a 14b and are concerned about top end at all or need room to grow in the future you can always swap out the 6cm2 exhaust housing for a 7cm2 one. It makes a real difference up top.
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