Like everyone around here i need more power!

[Jets303]

Im looking for a fast street car/ daily driver. I want to make 300hp asap and i need to know what turbo setup works best. I know this question has been askedd 100 times but i want someone who really knows what they are doing to help me out. The lower end of my motor is setup to handle well over 300hp so im not worried about that. I spent so much time and research on the mototr itself and i want the same for the turbo. Thinking about the 20g with bigger IC and a dsm link?

Lower End:
-J.E. Pistons
-Scat H-Beam Rods
-CP Gas Nitrated Piston Rings
-King Performance Bearings
-Modified Thrust .395 Wide
-Entire Block was Balanced and Blueprinted
-Performance 3G Lifters (no lifter tick)
-The Balance Shafts Removed
-All other components used in rebuild are brand new O.E.M. parts.
Head:
-Crower Stage 1 Street Cams
-Cometic Steel Head Gasket
-ARP Head Studs
Transmission:
-Act 2100 Clutch
-Fidanza Aluminum Flywheel
Fuel:
-Walbro 255 lph Hi-Flow Fuel Pump (High Pressure) (not installed)
-Fuel Pump Rewire Kit (not installed)
Exhaust:
-Turbonetics External Wastegate
-Custom O2 Housing
General Engine:
-Aluminum Air Intake
-Upper Intercooler Pipes
-Greddy Type-S Blow Off Valve
-K&N Filter
Electrical:
-Greddy Profec B Boost Controller
-Greddy Turbo Timer
Suspension:
-Front and Rear Strut Bars
Drivetrain:
-New Hub Assembly on all four wheels
-New Rear Differential (all work done during engine rebuild)

 

[1gDSM4g63]

You could do 300 hp with a stock engine with a couple of bolt-ons. It looks to me your engine is built for more power than 300 hp.

But what is your preference for a turbo... low spool, 16g, or bigger power, s372?

And you need a 3.5" - 4" FMIC, a tuning device, higher degree cams.

 

[MrBoxx]

Any 50-trim.. all day long. That would get you to well over your 300hp goal safely, on low boost. The 50-trim turbos are probably some of the most versatile ones you can get. Ball-bearing/journal bearing; external gate/internal gate; polished/unpolished; etc. etc.

DSMlink is awesome, and I highly recommend it. Find a decent shop with a dyno and a good tuner, and you're in business.

 

[Jets303]

I like the ideas with the bigger turbos. About how much boost do you think i can run?

 

[jrohner]

Any 50-trim.. all day long. That would get you to well over your 300hp goal safely, on low boost.

I would be pretty pissed to not get at least 400-450awhp with a 50 trim

 

[MrBoxx]

You'll really need to put everything on and datalog what your engine does at various boost levels to determine that. Assuming all your maintenance is up-to-date, with a 16g-50-trim sized turbo, you'd probably have no problem running 18psi. On a good tune, or "race-tune", you could probably run more. Note that you'll have a bit more lag on the larger turbos, but top-end will increase dramatically over the stockers.

To give you an example: I run a BEP M-trim, which is slightly larger than an Evo3 16g, but slightly smaller than a 50-trim. With my current mods, but without any sort of tune (short of calibrating 1000cc injectors in global settings) on DSMLink, I logged about 37lbs/min of airflow at 17-18psi. And that was with low timing due to knock. A 50-trim will be an even more efficient turbo, which means that it will theoretically produce the same airflow at a lower boost pressure. Keep in mind, an old rule of thumb is 10 hp for every lb/min of airflow. Yeah, it's bench racing, and I'm not a fan of it, but it gives a rough idea of what to expect. I don't believe that my car made 370hp or anywhere near that, but I'm guessing it's over 300. As you can imagine, a 50-trim would probably get you between 300 and 400 horsepower on your current setup without too much difficulty. Just remember that you'll need larger injectors and an aftermarket adjustable fuel pressure regulator to go with that 255lph fuel pump that you haven't installed yet.

I would be pretty pissed to not get at least 400-450awhp with a 50 trim

Sure, that's probably possible on a great tune. For now, the OP wants 300. Maybe later, he'd like to bump his goals up a bit. That's why I suggest the 50-trim as a versatile turbo, bridging the gap between the old 300hp standby of the 16g and the larger 500hp turbos out there. If I had the chance to do it over again, I would have gotten a 50-trim instead of the M-trim, but the deal I got on the M-trim was too good to pass up.

 

[Jets303]

Im well aware of the possiblities of my motor...I for one built the beast i guess the real question i should be asking you all is if this was your car whats next. I dont like too much lag but lack boost in the top. Im almost sure i know what im going to do but i might as well ask my fellow dsmers the question.

 

[1gDSM4g63]

I recommend going for the Holset HX40 or the BW s366. Both can out spool the gt35r and both are capable of 500-650hp spools at 4k rpm. The 16g is not worth being of your engine.

 

[ove_98 TSI]

a 16g is capable of about 350hp but i think thats a little to small for your build i would say a 50 trim or bigger would be better for your build

 

[daren_p]

A 16g will meet your goals of 300 whp & of course any turbo larger then this will also meet your goal & will do it on abit less boost as well, at the cost of some spool.

Your asking for a turbo suggestion is far too general as you haven't given enough specific info on what your current goals are (spool & 1/4 mile as well, if these are part of your goal) & also what are your goals for the future? Another major consideration would be whats your budget & do you want to keep it as a Mitsu flange? That motor is well over built for 300 whp, the stock 7 bolt can handle ~400whp reliably. Personally if you want to keep it Mitsu flanged I'd vote for a FP3565HTA if I was currently looking for a turbo & had a built motor but this would be huge overkill for a 300whp goal.

 

[DRAGIN]

I'd recommend a 50 trim T3/T4 setup with a manifold and 02. Using a .63 A/R backhousing will keep it spooling well. If you dont' mind a little more lag but greater efficency you could step up to a 60 trim.

My wife VR4 with the same 50 trim, FMIC, AFC and hack MAS made 297whp at low boost. (15psi)

 

[Jets303]

So my prior goal of 300hp is in the gutter. From all the feedback it looks like im ready for a 400hp+ setup. So on that note i apologize for the dumb question now lets see what kind of 400hp setup you guys have to offer!?!