1996 VR4 Dyno Results with back to back FMIC swap.

[Trotty]

Trotty - you're cheating, you've got 2 extra cylinders!

I was in a hurry and dyno operator never changed the customer details from last session. Lol good pickup.

[lateshow]

If I understood correctly the car got better replacement turbos? And by better i mean less used stock ones. Could you please show how long it held boost? We made 354 from the crank with ethanol fuel and I can say that that these old engines - may the reason be whatever- cant hold +2 degrees of timing in the power regions no matter what. Only possible with ethanol. Is the original tuner now sure that the engine didnt knock.

But well y es these are no secrets. Turbos get tired and leaks appear in the pressurised system like the throttle body can leak a bit. I think that in high rpm where the power is developed even the smallest leak can lose a lot of power. Even though the pressure isnt high anymore the air flow is . We had no boost what so ever (the lines blocked) gave us about 1.3 bar spike and 0,85 bar at 6000rpm. The max power was archieved at 5500 rpm. Max torque was close to 600Nm.

I might try td04 conversion this year. I think these tiny ones have had it. It's a heavy car and can't hold up with a 320hp evo with 350hp.....

[lateshow]

Actually now as i took a closer I saw that you managed to keep 1 bar boost with stock turbos. Now that's phenomenal. Since every car here has gone under the 1 bar limit in how rpm. No matter what....That explains the high power. Nice... now if that car got some ethanol........

and sorry I missread the first post. U pulled off 2 degrees with gasoline first. That's normal.

But I have told everyone here the big secret. About 2 degrees more with perfect cooler and ethanol is the right amount. Then just get the fuelling right and thats it.

In comparison, this is our run
http://lateshow.1g.fi/kuvat/vr4/freefuel/vr4boost.jpg

[Davezj]

Actually now as i took a closer I saw that you managed to keep 1 bar boost with stock turbos. Now that's phenomenal. Since every car here has gone under the 1 bar limit in how rpm. No matter what....That explains the high power. Nice... now if that car got some ethanol........

and sorry I missread the first post. U pulled off 2 degrees with gasoline first. That's normal.

But I have told everyone here the big secret. About 2 degrees more with perfect cooler and ethanol is the right amount. Then just get the fuelling right and thats it.

In comparison, this is our run
http://lateshow.1g.fi/kuvat/vr4/freefuel/vr4boost.jpg

i know it should not make a difference but i would like to point this out, this dyno result is done in 4th gear.
this observasion is a follow on from another thread.

[lateshow]

Hmmm I wonder why we used 4th gear, what kind of difference. Should gain bigger boost in 5th?

[lateshow]

Hmmm I wonder why we used 4th gear, what kind of difference. Should gain bigger boost in 5th? The starter of the thread used 3rd, interesting.

[Davezj]

i know theory says if the dyno is setup correctly it should not matter if you do 3rd gear or 4th gear power pulls.
but i am hoping to do back to back test on a dyno day very soon. so same car, same atmospheric condition, same day, one in 3rd gear and one in 4th gear, i am just interested to see what the result will be.
it has been niggling me for a while now, so why not.

[ajc9664]

Sorry for the delay in posting this, mad busy couple of weeks.

Wheel power:
P292AFE_WheelPowerMAPAFR.jpg

[giblet]

Fancy mapping a facelift auto VR4?

[adaxo]

Sorry for the delay in posting this, mad busy couple of weeks.

Wheel power:
P292AFE_WheelPowerMAPAFR.jpg

That is very impressive figures there, if you would like to play with other members cars (inc mine) I think queue will be huge.
Hope you don't mind to do it for others?

[lateshow]

It's all about the boost...have never seen a vr4 keep over 1 bar boost pressure....

[Trotty]

It's all about the boost...have never seen a vr4 keep over 1 bar boost pressure....

U haven't seen mine.

[Trotty]

[lateshow]

and this isnt related to modifying certain ecu parameter anymore: but I think hardpipe kit is essential in delivering power..... But the mapping... as i have said is no secret and I have told the recipe for power many times.

Shame that isn't a dyno dynamics sheet there... and PSI... have to convert so that i understand