Torque gains, what does the job?
 

I have a Motiv test pipe, Cosworth air filter, Perrin pulley, and Visconti Stage 1 flash coming with the group buy shipment. I know most are going for 200whp NA which i would like to see also when I get the E85 tune after on the fly map switching is available.

I really want to see more low to mid range torque even if its at the expense of a few hp. I'm going ask John if he can do my E85 flash for more torque but what else can i do? Nameless mentioned to me they have a couple header designs one being for the torque gains I want which I will probably get but which cat back or axle back exhaust do you guys think will offer the most low end power?

Id say enjoy your ride now while waiting for some proven header designs; may not necessarily be the first to show gains in the market.

The only bolton that will really buy you low end torque at the expense of high end is some detuned cams.

That's true with old style engine but not with VVT.
I come from Golf R32 who have VVT and their it's been prouved by many Dyno that:
- 264/260 make more torque around 3000 rpm than OEM cam and more high end hp
-268/264 make more torque around 3000 rpm than 264/260 cam and more high end hp
- 272/272 make same torque around 3000 rpm than 268/264 cam and more high end hp

When going for more duration on VVT you often get a win win.

Taken into account. The OEM cams have quite long duration already, and they have crazy overlap in the midrange.

Of course I'm not totally sure but I think the evidence is pretty strong that the cams are somewhat high end oriented.

Cams may be an option down the road but i will keep that in mind. Do you guys think i need to keep some backpressure in the exhaust or get as free flowing as possible? I know turbo applications are different but Full Blown picked up a lot of torque when they added their 3" exhaust to their car.

Honestly, the last E85 dyno John posted is pretty good low end. It is actually really good for a 2.0L 4-cyl NA. Take a look at the dynos from some other NA 2.0L engines.

A small turbo, a roots blower, or a bored/stroked bottom end will be the only ways to get a significant amount of additional low-end torque.

Some cams may increase power across the board, who knows... but I don't think the low-end will be much improved.

Yeah i should hold off on the exhaust until after the E85 tune i suppose and go from there.

John didn't pick up that much power with exhaust on his E85 tune. And you already have the motive pipe. I would put the money elsewhere. Not sure what more you're expecting. Its an N/A 2.0l 4 cyl. Johns tune alone makes the low end and midrange much stronger.

Yeah so far the tunes plus parts at least with the E85 tunes hasn't really made much difference. Not sure how things are with 93, but I've seen tuning results from another vendor which shows gains with parts plus tuning. But the E85 tune so far has by far the biggest effect on mid range torque apart from a turbo kit.

the timing changes are huge after applying the stage 1 map...on pumpgas


cant wait to try e85...psyched!

A final drive ratio change might give you what you want at the expense of higher cruising rpm. Poor man's supercharger.

Joe, how much torque are you shooting for? My car just put down 162 to the wheels. I don't have a ton of mods.

What do you have done? I was looking at the E85 dyno sheet showing about 153 i was hoping for 165-170 but the numbers aren't the main thing just would like nice gains that aren't all the way at the top of the rev band.

e85, tune, SRT header back, aFe intake.

I've been searching around and haven't found a dyno with as much torque as mine. My car just might be a freak. It made around 200whp on the same dyno.

Yeah thats a good number with just those mods, I'm not an intake guy i'm going to get just a new hose between the airbox and tb with noise tube delete. I'm sure i'll be happy after my tune still want some kind of exhaust though i'm thinking about the Crawford Gymkhana if i want to piss off the neighbors or just get the Nameless offset axleback.

You should cut your snorkel like I did. I'd say remove it, but the stock airbox snout is so short that it just sucks in hot air and loses power after you've been driving for a few minutes. That's actually one of the advantages of the aFe, it has a very long snout (longer than stock and AIRAID).

i achieved the most torque by just making sure all the piping diameter was consistent from the header back (+high flow cat to be street legal). btw, this was for a NA 1.6 liter motor

i always question stuff like this. does hot air really cost more than extra ducting? i feel like if i can breathe easier in the summer than i can breathe through a straw, why is my car different. it does make sense that you drop the optimum intake volume speeds at a lower rpms but thats just kinda moving around power right?

Cold air is denser. Because it's denser, it requires more fuel to maintain the same AFR. More fuel = more boom. More boom = more weeeeee.

But less dense air should be easier to breath.

i understand density but it takes more and more work to suck air though a narrower/longer intake. if this wasnt the case i dont think itbs would really be good for anything. from what i have seen historically, cold air intakes just change the engine speed at which the intake gas is most streamlined. it is usually a trade off from from topend for midrange

A variable length intake manifold would help low down torque without loosing top end HP
http://en.wikipedia.org/wiki/Variabl...ntake_manifold
Many car have it Oem nowaday's. Schrick did one in the past for the vw VR6
http://en.wikipedia.org/wiki/Variabl...ntake_manifold

SUBARU had one on the NA EJ20 JDM
http://i51.photobucket.com/albums/f3...X/HPIM1144.jpg