all this talk of PETT kit makes me sad that ours is stil sitting around and not on the dam car

 

From my expierence with the pett kit i found that the merge collector on the hotside of the IC was not designed verry good, so i had custom piping made and upgraded to a greddy IC. After trying to shoot for my goal of 600 wheel on the stock 1420 turbos, i found that they couldnt produce 12 psi at redline. At 5500 i have 12 psi(550whp) and at redline i have around 9-10 psi(490-500whp) I will be doing some more upgrading by putting twin 20gs(50 trim) mitsubishi turbos in the spring. then i should have some good #'s for you guys.

and after reading previous posts, i want to see a dyno chart of the 600 whp. Its not possible, i tried.

 

Wow interesting. My turbos are hold 12psi all the way to the top. I have upgraded springs. I agree with the inter-cooler statement. Was it worth the Mod in your opinion?

 

Greddy IC... Greddy Turbo's... soon you will basically have a Greddy Kit

 

mitsubishi turbos.

adn yes the IC mod was worth it, instead of merging two pipes in one, each turbo has its own inlet

 

i am sure you know the Greddy Kit... ALL Greddy kits for all cars greddy makes turbo kits for are the same turbo's

 

I think those springs are very important when changing boost levels, it seems. A boost controller may not be enough, IMHO. Correct me if I am wrong.

 

Why dont you just upgrade to the Gt28rs

 

because 18g's flow as much, if not more, than GT28RS's, plus they cost a whole lot less.

 

Yes but there old in design and the spool would be slower as well.

 

is full boost before 3400 rpms really that much of a difference? plus he is getting 20g turbo's.. not 18g's

 

Why not the PE/IHI 1820SP?
Seems like a logical upgrade for the 1420s.

The PE1820 is well-known in performance circles for making BIG power and putting down good numbers. How does 11.68 @ 121 mph in the quarter mile sound? This turbo uses all IHI components custom-specified by Power Engineering of Japan. The center section is a roller bearing design for excellent spool characteristics.

Flow is rated at 630 CFM at 1.0 bar.

Comes with a 0.8-bar wastegate spring. Call for other spring options.

$1799 YIKES!!!!

http://www.powerenterpriseusa.net/pr...spec/index.htm






Or this for the subi world but why not?
IHI VF 22 Turbo

The IHI VF22 has the largest potential for peak horsepower in the IHI Family. In other words, in the IHI model range, the VF 22 supports the highest boost levels. It is capable of running up to 25 psi. Because it is a roller bearing turbo, turbo lag is minimal...the boost comes on around 3300 rpm. Expect to max out the VF22 somewhere in the 400-450 hp range.
Price: $1049.95

From another site:

The IHI VF22 is a DIRECT bolt-on upgrade for your WRX. That's right, no new manifolds, no crazy adapter pieces.

The turbo makes big power! See, the factory turbo is SMALL. This promotes good spool-up characteristics, but the car starts to wheeze a bit as the rpms climb into the upper reaches of the tach. The VF22 adds mid-range punch as well as vastly-better top-end performance vs. the factory Mitsubishi TD04. Typical gains are 20% in peak horsepower, and a whopping 30% gain in torque over the stock turbo at redline! BIG compressor housing means lots of nice cool air, even at relatively high (20 psi+) boost pressures. Subies have gone 11's in the quarter mile using this turbo.

There is a small lag penalty, but let's face it, the factory turbo doesn't exactly come online at 1,500 rpm anyway. Most drivers won't notice the difference; if they do, the smile from the high-end shove in the back makes them forget any lag. If you do want a turbo with better spool characteristics, if not all-out top-end, go with the IHI VF30.

And the last selling point? The price. There MAY be better upgrade turbos out there, but we defy you to find one anywhere close in price.

Proper mods for this turbo would include boost control, upgraded intercooler, and full intake and exhaust upgrades.

Limited quantities!
Sale price: $899.00 Nice.....

 

I've never been fond of Mitsubishi turbos. Maybe if they change there design and flow characteristics my views might change as well

 

has anyone blown a turbo from this kit?
one of mine gave out at 12lbs 500hp.

 

this may be true, but in going for bigger power, why in God's name would he spend $2k+ on two turbos that flow less than what is on his stock kit?

 

while I'm not fond of them myself, you cannot argue with results!

 

Any turbo properly sized will have results. Spool and efficiency is my concern.

 

I think GurgenPB had one go, if I remember right.

There was a guy on here selling one or two rebuilt ones, perhaps yours?

 

Rebuilt PE turbos? Where can this be done?

 

I have my old PE turbos if anyone wants to buy them...