Thread: question about VVL of SR20VET

^ im with you ben, we did this on the dyno a few times with the b16s, watching vtec and vvl on the dyno is the best way as you can see weather or not the crossover is effecting your poweband either positivly or negatively as you can watch both the cross over and the power differences in the cross overs depending on the rpm range.

We have dyno in Novosibirsk, but my friend who tried to check real power of GT x-trail’s motor (as per tech data =280 hp) said that guys who operates this dyno were confused how to use it with 4WD car

As per my personal feelings – car become fastest

exhaust? I did not see it on the list. Its a good way to pick up power across the power band. Also porting the intake and exhaust manifolds are good ways to pick up free power.

I forgot - exhaust manifold is original, but after it piping is changed to 80 mm + special valve. till 2000 rpm valve is closed - exhaust gases goes through original muffler, after 2000 rpm valve is open - exhaust gases goes directly through 80 mm pipe (with sport head at the end of the pipe) bypass muffler (real zero resistance)

and of course I have blow-off valve

Sounds like fun. Do you have any pictures or videos for us? Anything we can help you with? Just want to shoot the shit some?

Actually thinking about it, our smaller lobe camshaft is slightly bigger then the DE/RR cams are. That is probably why you don't have much low end torque. Get yourself a set of SR20VE cams. You will loose top end power, but smaller cam lobes should help with low end torque.

i don't know how to attach pictures on that forum, look at this links

Tuning step 1

Tuning step 2

That's so crazy to see a turbo SR20 with a stock air box. =D

Вот вам везёт! Нам ничего хорошого Ниссан в Америку ни привез.

SR20ve cams will not perform well in the VET. It only has VVL switchover rockers on the intake side.

When I used the VET cams I found it best to engage them around 3700-4000rpm for the best overall powerband. Kept good bottom end, but maintained a flatter torque curve without seeing the VVL "bump" on the top end. Pretty flat torque curve with those cams.