FI 100k miles update

[stevo585]

Originally Posted by Xxyion

This is VERY encouraging. I've been really thinking about boosting my car but my biggest thing holding me back was the reliability. I always kept hearing that if you boost your car you are basically dooming it to only live 20k miles or so. But i think with the fact that almost all cars come with some sort of turbo OEM, reliability has gone way way up as more and more companies are figuring out how to build kits that can last a long time.

Those oem turbo cars are designed generally for the turbo. Although not sure about the FA20DIT in the wrx. Is it mechanically any different than just lower compression?

[Kiske]

Originally Posted by stevo585

Those oem turbo cars are designed generally for the turbo. Although not sure about the FA20DIT in the wrx. Is it mechanically any different than just lower compression?

FA20DIT doesn't have port injectors which is a huge advantage for our cars. Makes upgrading super easy and relatively cheap also helps us prevent the carbon build up. The FA20DIT also has lower compression, hypereutectic (not forged) pistons. If I'm not mistaken, the DIT also has a better oil pump.




The one thing every one of these threads bringing up reliability misses on.

More power = less reliable.
More heat = less reliable.
More abused = less reliable.

It's going to be case to case basis. There are people with 450+ still on a stock block and people with 300hp that have windowed there block.

[CSG Mike]

Originally Posted by Kiske

FA20DIT doesn't have port injectors which is a huge advantage for our cars. Makes upgrading super easy and relatively cheap also helps us prevent the carbon build up. The FA20DIT also has lower compression, hypereutectic (not forged) pistons. If I'm not mistaken, the DIT also has a better oil pump.




The one thing every one of these threads bringing up reliability misses on.

More power = less reliable.
More heat = less reliable.
More abused = less reliable.

It's going to be case to case basis. There are people with 450+ still on a stock block and people with 300hp that have windowed there block.

My FA20DIT, on stock injectors, and stock fuel pump, makes more power than the majority of boosted twins. I'm not seeing the advantage here.

Injection capacity is not a limiting factor on the FA20DIT at this point in time.

[AJPG]

Originally Posted by CSG Mike

My FA20DIT, on stock injectors, and stock fuel pump, makes more power than the majority of boosted twins. I'm not seeing the advantage here.

Injection capacity is not a limiting factor on the FA20DIT at this point in time.

Perhaps you have a dyno for that?

[Kiske]

Originally Posted by CSG Mike

My FA20DIT, on stock injectors, and stock fuel pump, makes more power than the majority of boosted twins. I'm not seeing the advantage here.

Injection capacity is not a limiting factor on the FA20DIT at this point in time.

I'd hope so, given most of the boosted twins are sub-300whp. lol

Interesting, I haven't followed the new motor in a while I guess. When I had on NASIOC's forums, an issue with maxing out the injectors around 500whp on stock injectors was brought up often. Is this no longer the case Mike?

[Matt@Cosworth]

Gdi fuel systems as a whole typically are good for about 350Bhp with a single pump
you can run a bit leaner and push this up to 370 with hotter exhausts etc

but the limiting factor is the pump pressure usually

now there are 500Bar Gdi pumps available through bosch msport but often the fuel pump cam profile will need changing to get these to work so not just a bolt on

[CSG Mike]

Originally Posted by AJPG

Perhaps you have a dyno for that?

I don't have anything on me (I'm at the track), but I went from a 198whp (268 crank) baseline to 292whp (395 hp crank, extrapolated). Torque went from 221lb/ft at the wheels to 309lb/ft at the wheels.

Subaru claims 258 torque from the factory, which is really, really underrated.

I'm nearing the limits of the stock fuel pump, but not injectors.

[AJPG]

Originally Posted by CSG Mike

I don't have anything on me (I'm at the track), but I went from a 198whp (268 crank) baseline to 292whp (395 hp crank, extrapolated). Torque went from 221lb/ft at the wheels to 309lb/ft at the wheels.

Subaru claims 258 torque from the factory, which is really, really underrated.

I'm nearing the limits of the stock fuel pump, but not injectors.

Hope you enjoy your Sunday! I'm also at the track, but today I'm the engine and the driver.



Sent from my iPhone using Tapatalk

[stevo585]

Originally Posted by CSG Mike

I don't have anything on me (I'm at the track), but I went from a 198whp (268 crank) baseline to 292whp (395 hp crank, extrapolated). Torque went from 221lb/ft at the wheels to 309lb/ft at the wheels.

Subaru claims 258 torque from the factory, which is really, really underrated.

I'm nearing the limits of the stock fuel pump, but not injectors.

So that's stock turbo? Is the bottom end stronger in the DIT?

[CSG Mike]

Originally Posted by stevo585

So that's stock turbo? Is the bottom end stronger in the DIT?

Yes.

There's room for more power if I get more supporting mods.

[ajc209]

Originally Posted by CSG Mike

Yes.

There's room for more power if I get more supporting mods.

Originally Posted by moto-mike

This is what the rods look like:

The WRX has a slightly different small end, which is not where they break anyway. The middle is pretty much identical and where these rods always fail.

Are you sure?

[CSG Mike]

Originally Posted by ajc209

Are you sure?

Yes.

[Colin86]

Originally Posted by Cal3000

Tomei UEL Headers
Invidia Front Pipe
N1 Exhaust
deatschwerks 700cc Injectors
deatschwerks 265lph FP
Moto East Zeitronix Flex Fuel Kit

Stock clutch?