So current mods to the car are...
-MR gearing with 5spd rear dif
-Fidanza flywheel
-6 puck clutch
-3sx downpipe, stock cat and pre-cats, custome 2.5inch catback
-Dejon tool y-pipe with tial bov, individual intake per turbo
-Maft-t and 3inch gm maf running blowthrough style
-Hotwired walbro
-450cc injectors(I also have a brand new set of 550cc injectors not installed)
-mirage datalogger

Now to the actual question. I am finally starting to really look at turbo upgrades. And I'm really only looking to be in the mid 12/ high 11 range on street gas. The ones I am looking at are 13g, 13t, 15g. Here are the pros and con's i've found so far. Also I'm trying to not break the bank in doin this.

13g
Pros- Cheap(probably get 2 for under 300), bolt on, better than stock and only requires the 450cc fast spool up
Cons- Might end up getting something that needs rebuild, only can hold about 15-17psi redline

13t
pros- Fast spool, holds boost in the 20psi range, only 600 for the conversion
cons- have to modify certain parts of the car to make em fit, not really wanting to do this, time and parts for the conversion, more cost, might have to use the 550cc

15g
pros- can hold in the upper teens to 20's pis range?, only 700 with for conversion, bolt on,
cons-agian time, cost more, probably would have to go with the 550cc, lag

Now my questions(I'm leaning towards the 13g's just to let you know):
1. For the 13g if i want to run in the 18-20 psi range, is that duable on the 450cc or would i be throwing in the 550cc anyway
2. As far as the times I want mid 12's to high 11's, is that attainable with 13g turbos?
3. If I did the 550cc with the 13t's, 15g's, then would I have to get something that can control timing, right now I have the MAF-t for tuning, no timing control. What would be a good timeing control, i.e. e-manage, aem, adjustable cam gears?
4. Last question, with the upagraded turbos, what other mods would be nice. I was thinking:
-DSM sidemounts(would frontmount be overkill for this, or can sidemounts handle it)
-Wideband
-upgraded intercooler piping(what benefits from this?)
-EGT guage
-anything else you can think of, i.e. spark plugs, wires, grounding kit, little stuff that makes a difference?

I've done a lot of searching on this topic so if i've missed a thread with one of my answer, please link it, otherwise any opinions/info would be very appreciated.

Thanks

I would go with the 13t's or the 15g's. I would recommend the 550 with all choses. You might get into the mid 12 range with 13g's on pump gas but it would be easier with the other two. Timing control would be nice you could pick up a e-manage blue for cheap or sell the maf-t and get an e-manage ultimate. A wideband is highly recommended and an intercooler upgrade would be good but not absolutely needed.

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'94 vr4- Now with extra slowness

the way im going is with the 15g's, just because i know if i go smaller first im going to want more sooner. the 13g's just dont seem to have that much more offering really than stock yea they hold more boost but even still they dont have that much of an overall punch to them.

Some DR500 would be a great high 11's low 12's set up and you can boost upward of 20psi and they are reliable/new only have to do a turbo upgrade one time. but cost 1,500

What about the 16g's?

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could be expensive and a lot of stuff to replace vs bolt-on

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From Brixton Prison, Jebb Avenue London S.W. 2 Inglan

13G are good, reliable, and easy.
15G make more power, are usually reliable (anytime anyone opens up the Mitsu built turbos there's chance they screw it up), and can make more power with really little lag penalty.

I would get those, unless you plan more than 20psi regularly, then I like a TD05/EVO3 setup, or Garrett turbo/centersection for durability at higher boosts.

As far as changing injectors, stockers are small and 550's are a basic upgrade pretty early on. An ARC2 is easiest to control the computer probably, and has alot of potential. You don't really need ignition timing control at the levels you are talking about.
JT
ps I have a set of RC Engineering 720cc injectors for our cars that I am no longer using. They got me into 10's, and are for sale I guess. Overkill for what you need now though.

Well shit, look who it is!

At any rate:



These turbos are so underrated it's really sad. Bolt them on and drive. Keep your stock injectors, innercoolers, & boost controller, and you'll already have a big grin on your face. When that gets old, slap on a set of DSM injectors and turn up the boost till you run out of octane.

Very very cheep/simple setup that will put your car above par with many of the new muscle cars coming out.

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06 Blue EVO 9

You're gonna need methanol or race gas before you even get to that level. Regardless of which injectors you decide to run.




It's attainable, but not easily. Are you scared to launch your car at 6000rpms and able to shift so fast your driveshaft/rear end hit the bottom of the frame?



Once again, less timing isn't the answer. More octane is.



I tell people to pick an EGT or WB gauge, cuz having both is kinda overkill.

All my cars have had stock innercooler piping and SMICs. Upgrading means more space for your little turbos to pressurize. Believe it or not, you might see better results from removing your wheelwell covers and improving the airflow thru the stock innercoolers over upgrading them.

Running methanol is kinda like upgrading your innercoolers in a sense that it cools the air down using a mist of water/alcohol AND it does a much better job. The added benefit is the alchy is literally another fuel, so you run richer meaning you don't need as large of an injector.

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06 Blue EVO 9

how about 16T?

thats what I'm going for. soon...

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From Brixton Prison, Jebb Avenue London S.W. 2 Inglan

19Ts and be done with it.

yeah, $2000.

thats what I wanted to buy but I think it would be overkill.

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From Brixton Prison, Jebb Avenue London S.W. 2 Inglan

If money wasnt an option what turbo would you use?

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Never argue with an idiot. They drag you down to their level, then beat you with experience

I am drunk so take what I say w/grain o' salt.

+1 with what ver fer said. Don't waste your time on a 13G/DR500 sized turbo. You will want more too soon to make it worth the money/time. Most peeps that buy 600cc bikes end up selling them rapidly to get something bigger.

Skip the half step and take the full step into a 15G/13T/19T/DR650 range if staying TD04. 13T = bang for the buck; 15g = kid tested, mother approved; dr650 = similar to 15g.

You will need 550cc injectors or larger to take advantage of this size of turbo.

I researched TD04 turbos for 5 years while doing all my other mods. Don't tap dance around with a minimal upgrade, you will regret it.

I am running dsm sidemounts. They are a cheap alt. to a fmic. Do not waste money on ic pipe "upgrade". Spool = overrated. 15G/DR650/13T if tuned correctly will have a marginal difference in "spool" and better top end as well as higher max potential. I have taken rides in cars with dr500's, 13T's, 15G's, DR650's, 16G's.

My $.02.

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I agree on this one. If you're going for bang for the buck, I really like the 15G's. High 11's on 13Gs is begging for turbo failure - they are easily THE best 12 second turbos and as said earlier, way underrated, but there's no need to strain your car to hit high 11's by maxing out your turbos when 15Gs are cheap as dirt these days.

Don't do DSM sidemounts when there is a FMIC kit for just under 600 bucks shipped, right now in the group buy section of 3SI. It's a little bit of a hassle, but with some finagling, people have had decent fitment (worth the 1000+ bucks you save).

Go to Maximal performance and grab yourself a t-case bracket. They're under a hundred bucks. If you're going to be launching, save yourself thousands.

Like G-Ell said, you need higher octane to run higher, hot boost (that is, you're not going to be running 18 PSI on DR-1000's, you're running it on 15G's) Thus, you'll want a meth injection kit if you're going for boost in the high teens/low 20's. A good one is just a few hundred. Make sure the fuel controller you have integrates well with meth injection kits.

I also agree on spool being overrated. I wouldn't want a single turbo T80 Supra that doesn't reach boost until like 5500 RPM, but a downpipe, gutted precats and 15G's are by no means "laggy" - just laggiER than the stock turbos (which are absurdly fast spooling).

Good luck on your setup.