+100000000

 

As far as i'm concerned there's 2 turbo options for a 2.0 Evo:

1. Green - instaspool with tons of low end.
2. 35r - laggy with tons of high end if you have time to wait for it.

So the answer to OP is green.

 

Why not use one of those laggy, big turbo kits and assist the spool with some nitrous

 

It's annoying to see the same question being asked weekly. Especially a question like yours.


yeah, 35r and autox is not a good combo..

 

he has a very good point about a question of this caliber^^^

 

4400 is probably more realistic for that turbo. Unless you have 264's and a stroker I don't think you would hit 25 psi at 3900 RPM in 3rd.

 

i would stay or look at the green! just my 2cent..

 

I don't own a diesel truck, but I like to follow tuner developments. One of the hottest upgrades right now are compound turbos. One small turbo blowing into one large turbo; this is supposed to be the best of both worlds. Quick boost from the small turbo, and biggie boost with the large turbo.

My question is, why do I not see compound turbos like this on cars?

 

IX's can build 25 by 3900-4100 on that kit. Seen it personally, though it was with bigger than stock cams, Cosworth 272's, my MIVEC, and E85. Alot of variables on that one. It was on a 2.0 though.

 

I have a 61mm (56 trim) and it doesn't hit 25+ until well after 4500 (more like 4800-4900). I have 280s and a 6 speed but every other supporting mod and the car is tuned by IMO the best tuner in the country (Nick @ DTM). I run just 93 but I do have a IX (MIVEC). Now, maybe you can build that kind of boost if you go WOT at 2500 for a dyno pull or log, but if you do it on the street or road course you won't be starting down there and you won't get full boost before close to 5k. I also have a more efficient manifold than the ETS one.

 

Thats apples to oranges though, we are talking about a 58mm with a different housing and smaller wheel with less inertia. To keep this tech though, how much boost are you seeing at lets say something nice and benchmark like 4k? I am curious about the differences between the 61 and the 58mm wheels. Also I am curious about which 280's you have?

 

I say the HTA35R makes a hellava good power and spools very fast.

 

Spoolup (or when the car reaches full boost) is determined by a lot of variables - basically anything that affects the airflow into and out of the engine.

To the OP: In the end it all comes down to sacrifices.

- If you want the quickest spoolup, get a TME turbo (16G) and cams that work in the middle of the powerband (i.e. 264s)
- If you can suffer a minor loss in spoolup, get a Green and mild cams
- If you want big power at the loss of about 1000 rpm spool, then do a HTA 35R with supporting mods (built block and head and ... and ... and... would be appropriate here)
- If you want huge power, then emulate what the top drag racers are doing

There is no have-your-cake-and-eat-it-too-scenario when it comes to spool vs. power as far as I have seen yet. The Green is as close as it gets though, IMO.

l8r)

 

IIRC (too lazy to check), they are on the drawing board for several car manufacturers right now, mostly diesel applications. Also some interesting stuff on the horizon with hybrid diesel/gasoline engines.

l8r)

 

Forced Performance have no current plans to release a HTA3065, I dont know why people keep saying they are.