Crawford Performance Turbo Kit
 

Okay so I've been doing some research over the past couple months regarding where I want to go with the car. Everything I've done so far has been aesthetic because I want to make sure I know what my end goal looks like before I start doing anything. I know I'm doing turbo instead of SC, and I'm currently working on new exhaust and clutch before I make a final decision.

One thing I have yet to see much information on is the Crawford twin scroll.. Does anybody have any experience with this kit? 450HP on E85 and 430HP on pump gas... Obviously I wouldn't want that much on the stock motor but that's pretty damn appealing.

I did a quick search for some threads but haven't found anything, sorry if I missed something.

Basically, if you know anything about this kit, what are the pros and cons besides the obvious reduction in turbo lag from the twin scroll? Worth the $7k before installation, or should I just forget it?

Choose another kit.

498whp on e68 and 425whp on 91 pump with @FullBlown kit. Crawford has a built engine as do I just to be fair.

If you don't want that much power how much do you want? There are a lot of kits for all different power levels.

It's just way too much money for what you get. They include a fancy $700 Inconel heat blanket for the header but the rest of the kit is pretty basic and uses a relatively inexpensive IHI VF36 turbo. It's a neat idea and I think would be a good setup if it was $2500-3K cheaper. You are also stuck with a header with a flange which makes it impossible to go to any other turbo.

You would be better off with pretty much any of the other kits out there.

Makes sense, thank you.

I'm still wrapping my head around all this. I want lots of power but I don't want to spend $20k on having to upgrade everything else just to fit the turbo or keep it from breaking my car. I heard good things about the Crawford but it wasn't from a BRZ owner so I came here to be sure.

It's all still waaaay down the line. I'm still going to do plenty of research before I make a decision, as it will take me at least a year and a half still to get the money I need to get it all done.

I would suggest taking a ride in local FI twins to wrap your head around what a certain amount of power feels like.

Lots of power and reliability are going to cost you. I'm talking 400+ power where the stock motor is hit or miss. It could last forever, it could die anytime. There isn't really a set known limit. Most issues have been tune related more than anything because the compression ratio requires a spot on tune. My setup now at 380whp is fast, but it gets boring. My new setup will make 500 but includes a built short block with 10:1 compression

Just to clear something up too, if Crawford is quoting those numbers from their own Dynapak, don't expect to be anywhere near that with the kit on a dynojet. Their dyno reads so unbelievable high, that at one point they were quoting crank HP numbers off of it.

Example, a stock 06 STI on our Mustang makes about 200awhp, their dynapak shows the same stock STI making 300awhp.

But yes, there are definitely better kits for the money.

FBM, JDL, MAP, Treadstone, soon to be (hopefully) Full Race, will make those goals. I would say shoot no more than 300-320 whp on pump, you can push 400 on E85 if youd like, anymore than that youll start to need a shortblock.

Dont forget the other components to the system as well, the stock tranny will not hold 3-400 whp indefinitely, even with an upgraded clutch people have been sheering gears faster than I can sheer a sheep (I cant sheer a sheep, I just wanted to say that lol).

Adding gobs of horsepower to any car that wasnt designed for it, will have negative implications on other major parts and supporting mods.

Reliable, gobs of hp, cheap.

Choose two.

Wish I had some locals around here lol. The only ones I've seen are driven by teenage girls, plus a BRZ owned by a guy that works at an E-Cig shop but mine is more modded than his.



So basically what I've taken away from this is that Crawford isn't the way to go. You've all been really helpful. Price really isn't an issue for me, but I don't really want to end up having to rebuild the motor, change the block, et cetera et cetera. 300HP is honestly good enough for me if it means little effort. I don't race or track my car, I just want it to be fun for those few moments where I have someone breaking their neck looking at my car lol.

If you arent looking for much more than 300 whp, I would reccomend the FBM base kit.

Check out the fullblown, prime motoring, p and l, and MAP owners threads. I chose fullblown. Prime looks like an awesome company as well. Map is underrated and underappreciated around here since they were a little late to the party but make a great kit and constant community support.

Dont expect over 320whp on 93 without putting in pistons. 500+ is possible on e85 but the engine is getting beat up north of 400-450whp. The manual transmission does not like power over 500. If you have sticky tires and track it you could bust it at 400whp depending on how much torque you make.

A gtx28 turbo making 300+ on 93 and 400 on e85 is about as well rounded as you can get without putting in pistons and worrying about the drivetrain. Dont forget an oil cooler, gauges and ecutek.

Crawford showed up with a sky high price then quoted some high at the time hp numbers on a cheap almost proprietary turbo on a funky dyno using a shortblock they WILL NOT SELL to the public (yes their test and race car has rods in it they wil not sell due to install difficulty) and then disappeared from the forums.

I'm making 270 on 91 with the greddy kit, if you plan on doing e85 you'll be at 300 no problem. Definitely fun on the streets with the quick spool.

Preach it ! MAPs kit is top notch and decently priced. @MAPerformance and @fullbown are the greatest to deal with too

Crawford was banned for not following the vendor rules.

I find most of what he has to say yo be shady anyway, so I was OK with the decision.

Your power will be limited by the fuel you run. 91 max is roughly 300 with a really good tune. 91 with meth injection maybe 350.

Higher numbers can be had if you run E85 if that's available to you.

Even at these numbers you'll need a clutch, catch can, radiator and fans if you track or drive hard.

Reliable higher numbers and you're in short block territory.

I love my GTX2867r Full Blown premium kit with meth on 91. FB is a great company to deal with as well. Their customer service is great and I'd buy from them again.

That means nothing, i'm pretty sure the mods ban 6 people everyday before breakfast just cause

You won't get that much on a stock motor with their kit. Those numbers they are quoting are probably on their built low compression turbo motor essentially making it similar to an EJ motor. This kit runs a cheap baby Subaru turbo. You can see all you need to see about Crawford and their kits/ECU tuning in the various media the car has gotten where it is never running properly.

Yes Crawford's is making that power on his built engine of which he blew up several. He never addressed any cooling issues other than the $700 being heat shield. The powerband of that kit is awful too, it peaks at like 4500rpm then falls off a cliff. Yeah it will make a daily driver feel fast but if u try to race with the gearing we have you'll have to short shift the crap out of it lol

Aside from the other great kits mentioned here you also can take a look at ptuning's quality turbokit.

ive been doing my research too as im in pretty much the same boat, and PTuning's kit stands out to me because they are making around 290whp on 6.5psi of boost. I haven't seen other kits that can achieve that power within the low amount of boost.

Sounds like solid reasoning to me. Why not only run 6.5 psi on a Garrett GT30 turbo.

or 3psi on a 88mm turbonetics

Longevity?

What octane do you have access to?

Octane makes a huge difference for this motor. For example my ptuning kit maxes out at 280 whp on CA91 octane and needs 8-9 psi to do it. On 93 it would probably be more in line with ptuning's results.

Of what? The turbo?

Every kit makes about the same power at the same boost on the same turbos. The only real differences are spool/response and more importantly the tuning going along with it. It's the same engine and the intake, piping, and IC have a negligible effect on overall power.

Crawford turbo jdm vf36 sti is not cheap , around 2500k .
Vf36 used in wrx 2002 -2005 and it's fast.
Their price is high and i find no dyno plot but remember crawford is the only tuner that is over 20 year on subaru engines tuning.
I had no experience with their turbo but i regard their experience on subaru engines.
Crawford says we could make 300whp on stock engine with their turbo kit.
With 10psi boost on e85 it give 320whp with boost controller.
Price is alittle higher than other turbos.
Remember they make twin scroll turbos with more torque over power band.
The only thing i do not know is their ecu tuning .
Maybe so good may be not good i do not know but i think we could tune on dyno , no problem.
I really like to shop their kits.

Plenty of people hit 320 on pump gas and just under 500on e85 reliably... Craw fords kit is horrible, this isn't an ej motor, it is a whole different animal... There is a reason you don't have people all over the forums with any actual experience praising them. It's always fanboys quoting crawfords "years of experience with Subarus." Name for me again a Subaru before the BRZ that had direct injection.... What about 12.5:1 compression.... Two injectors per cylinder... Angled rods... Real wheel drive?!?!? Ohh wait none if that matters, it has a Subaru badge so Crawford must be the bestestest... /sarcasm

Again again i say i had no experience with their kit but we can not judge people on surface.
I think even with e85 or race gas it is more logical at first we reduce compression ratio then turbocharge engine.
Crawford was first tuner did it .
Brz engine as i know is 80% subaru 20% toyota.

That 20% is the most important part... The d4s .. The game changer

I really think we could judge if we test their kit.
You think it's crap i think maybe good kit but both of us may think wrong.
Hope to find a real review

I've done some research myself on this and have directly talk to Quirt Crawford. The major difference between Crawford's kit and the rest would be that it was developed to go with their built short block. The entire kit is really around the $15k mark with the built short block. This also includes every supporting mod you need ready to go. Including a custom built clutch, beefier axles, full exhaust, tune, and updates. Also, there is no core exchange on the short block, so you could go back to stock. As far as power numbers, it does "only" make around 450whp to the wheels on e85 but it builds power quick. At 4500 RPM you hit 400+ whp and make it all the way to redline which you can rev up to nearly 9K also you hit peak torque at 4500 rpm at about 450lbs. My friend has a kit from full blown and made 400whp but it was not nearly as quick and only mad 299lbs ft of torque. Peak boost at 28psi comes on about 3500 rpm. It's a great turbo for the application and makes great power quick and holds it. Perfect for the track, when I say track I mean road course not drag strip lol.

Ironic.

With a built block you can make a VF turbo hit that psi very quickly. It's not uncommon for that kind of spool characteristics from a shortblock with a lower Cr.

Does your buddy with the Full Blown kit have a $10,000 motor build as well? Does your buddy with the Full Blown kit run 28 psi? The Full Blown kit is capable of making way over 400 whp without the additional Crawford cost. What you don't reason is the Crawford kit uses a little baby Subaru turbo and runs a ton of boost which is what gives you that momentary high peak torque value and then it starts trailing off hard as RPM increases.

I think you already know the answer to that question. He had spent a total of $8k with supporting mods and after a tune. I think if you added a built short block to that you're going to be well over 10k said and done. Full blown is another great company to work with. I've never said they weren't. Just thought I would share some info from what I've received from Crawford.


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And were explaining the benifits of other kits outweigh these benefits from crawford.