100hp / Liter

pulpmelon_Z

Hi Guys
Pretty straight forward question...

What does it take to make 370hp (crank) out of the 3.7L VQ?

I guess thats around 330rwhp dynojet (correct me if im wrong?)

I'm thinking along the lines:

Sport cats
Catback
Intake
Tune

or am I way off the mark??

Thanks in advance!

DarkZide

id say test pipes (not HFCs) and the rest plus a really good tune. Maybe throw in the motordyne intake manifold.

but 100hp/liter is ricer math, so i'm not sure why that particular power point is important to you?

NickTurnon

I want to know the exact same thing! I am hopeing to get my car to 370HP!

6MT

For BHP, I think you're very close in your guess. But for WHP, you're a bit high. IMHO, WHP would be around the high 290's or low 300's.

AND, here's the caveat.... It really depends upon the Dyno being used.

__________________
Andrew

2009 370Z Sport/Touring 6MT sold
2013 Honda Civic Si coupe D/D

christian370z

You would need to do full bolt ons to get close or reach that target. Stillen G3 intakes, HFCs or test pipes, a tune, and a cat-back exhaust will get you to that mark.

__________________
-320whp / 259wftlbs-
SP Rays -- RE-11s -- SpecialtyZ Tune -- Swift Springs -- Stillen 25R Oil Cooler -- Stillen G3 Intakes -- Berk HFCs -- F.I. 12" CBE -- Stillen Sway Bars -- Es14 Spring -- INGS+1 lip -- CF Spoiler -- GTR Start Button -- VLED Parking Lights -- PWJDM V2 shift knob

6MT

But I think that's what he mentioned above.

__________________
Andrew

2009 370Z Sport/Touring 6MT sold
2013 Honda Civic Si coupe D/D

red6spd

Your only going to make 315-330ish to the wheels with the current mods they have for this car. I made 339 with the mods I have. High or not you can see how 370 is never going to happen unless they make more aftermarket parts (Cams, Intake Manifold, Valve Train mods) Crap like that. Parts that wont be your normal bolt-on

__________________
2010 Base+Sport 6spd: Stillen G3, FI Non-Resonated CBE, FI Non-Resonated Test Pipes, UpRev Tuned, Custom 24R Oil Cooler, JDM Rear Fog-OEM Harness.
???Whp ???WTQ (Will find out come spring time)

6MT

He's saying 370 at the crank, not the wheels.

__________________
Andrew

2009 370Z Sport/Touring 6MT sold
2013 Honda Civic Si coupe D/D

pulpmelon_Z

370hp 370z has a ring to it...

So the shopping list looks a little like:

Stillen Intakes
F.I. sport cats and exhaust
Uprev Software (Are there any alternatives?)

also whats the state of play with aftermarket headers for the Z, I can only find two vendors.

I get the impression that the stock intake manifold and throttles aren't much of a bottle-neck?

red6spd

Well if you want to run Cats you would have to go with Stillen's Shorty headers which from what I hear do nothing since the stock Exhaust Manifold is not restrictive. Your other option is Long Tube Headers by Fast Intentions. But for the price of them and the install price I dont think the small gains are worth it over test pipes.

__________________
2010 Base+Sport 6spd: Stillen G3, FI Non-Resonated CBE, FI Non-Resonated Test Pipes, UpRev Tuned, Custom 24R Oil Cooler, JDM Rear Fog-OEM Harness.
???Whp ???WTQ (Will find out come spring time)

pulpmelon_Z

I guess it varies from state to state, but in general do you guys have to pass an emissons test?

Can you get though on test pipes or do you swap the cat converters back?

red6spd

If you do test pipes there is always going to be that risk that your gonna get a CEL. And if you have a CEL you can not pass an inspection. But lucky for us the UpRev tune can get rid of the CEL and keep it off. I have had Test Pipes on my Z for over a year and I have never thrown a code because of the UpRev tune. As for passing an inspection with no cats, you should and could fail a visual since you have no cats, but unless your at a shop that is really anal all there gonna to is plug your Z in and see that there is no CEL and there has not been one and you will pass (Im from NY)

__________________
2010 Base+Sport 6spd: Stillen G3, FI Non-Resonated CBE, FI Non-Resonated Test Pipes, UpRev Tuned, Custom 24R Oil Cooler, JDM Rear Fog-OEM Harness.
???Whp ???WTQ (Will find out come spring time)

pulpmelon_Z

Thanks red

I think I'll run cats on the Z, as I have a test pipe on my civic and that stinks of gas even after custom tune, plus the exhaust goes:

red6spd

No prob. Yea with the Test Pipes your gonna get the smell but I kind of like it LOL. Test pipes wont make your car sound bad or nothing like that your just gonna have more Rasp.

__________________
2010 Base+Sport 6spd: Stillen G3, FI Non-Resonated CBE, FI Non-Resonated Test Pipes, UpRev Tuned, Custom 24R Oil Cooler, JDM Rear Fog-OEM Harness.
???Whp ???WTQ (Will find out come spring time)

6MT

Will your MOT fail?

__________________
Andrew

2009 370Z Sport/Touring 6MT sold
2013 Honda Civic Si coupe D/D