Visconti Tuning - Latest Forced Induction Tuning Info

[Visconti]

After hours and hours if tuning theses motors turbo and no turbo I've got a understanding of what can and cannot be done.

11.8 it good on pumpgas forced induction.

[Jay Jr]

Agreed, .80 lambda on pump fuel is plenty safe IMO. People remember, timing is what kills motors. . .

[WiKKiD]

Originally Posted by Jay Jr

Agreed, .80 lambda on pump fuel is plenty safe IMO. People remember, timing is what kills motors. . .

I agree to that! But...

Running lean makes for hotter engine temps. This increase in temp leads to what is known commonly as "knock" or for the "technical guru's".... preignition. Knock leads to increased cylinder pressures and heat. Knock leads to detrimental and at time catastrophic damage like cracking/melting a piston and bearing damage.


You run too lean and what happens is you have an unexpected explosion in your combustion chamber, the force generated by that explosion has to go somewhere and that somewhere usually goes to the desctruction of rods, putting stress on rod bolts. either you melt shit, or shoot something through the side of the block



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[Visconti]

Originally Posted by WiKKiD

I agree to that! But...

Running lean makes for hotter engine temps. This increase in temp leads to what is known commonly as "knock" or for the "technical guru's".... preignition. Knock leads to increased cylinder pressures and heat. Knock leads to detrimental and at time catastrophic damage like cracking/melting a piston and bearing damage.


You run too lean and what happens is you have an unexpected explosion in your combustion chamber, the force generated by that explosion has to go somewhere and that somewhere usually goes to the desctruction of rods, putting stress on rod bolts. either you melt shit, or shoot something through the side of the block



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Like I said before, I've spent plenty of time with these cars and know the sweet spot. If I wanted to push it id run 12.3-5s on pump.. Yeah on pump.

John

[jdzumwalt]

I tend to tune at 10.7- 11.2 on my turbo motor's but I have sustained 15psi boost loads with almost no cool down for hours on end some time's 10 hours. My motors seem to hold up quite well.

Now that being said John would not have a good Rep blowing up motors I'm not too worried.

[Visconti]

Originally Posted by jdzumwalt

I tend to tune at 10.7- 11.2 on my turbo motor's but I have sustained 15psi boost loads with almost no cool down for hours on end some time's 10 hours. My motors seem to hold up quite well.

Now that being said John would not have a good Rep blowing up motors I'm not too worried.

These motors are a little different..

My sti I run 11.0 on pump and mid 11s on e85.. 550whp pump, 630 on e85

This fa20 motor doesn't like being rich.

[WiKKiD]

Originally Posted by Visconti

Like I said before, I've spent plenty of time with these cars and know the sweet spot. If I wanted to push it id run 12.3-5s on pump.. Yeah on pump.

John

Direct injection for the win!

[Ryephile]

Originally Posted by Visconti

...
This fa20 motor doesn't like being rich.

Just hypothetical; have you zeroed in the peak-torque AFR across the RPM band? I know that doesn't entertain for knock counts, EGT, or long term reliability, I'm more interested in deducing BSFC. I understand that tailoring a finished tune for longevity obviously goes beyond that narrow scope. Thanks.

[Visconti]

Originally Posted by Ryephile

Just hypothetical; have you zeroed in the peak-torque AFR across the RPM band? I know that doesn't entertain for knock counts, EGT, or long term reliability, I'm more interested in deducing BSFC. I understand that tailoring a finished tune for longevity obviously goes beyond that narrow scope. Thanks.

I've already shared more then I wanted to

John

[Ryephile]

Originally Posted by Visconti

I've already shared more then I wanted to

John

Walking the fine line between proving competence and giving away IP to competitors.

Care to elaborate on when we'll see the fruits of your other boosted tuning results? Specifically the Innovative twin-screw kit.

[Visconti]

Originally Posted by Ryephile

Walking the fine line between proving competence and giving away IP to competitors.

Care to elaborate on when we'll see the fruits of your other boosted tuning results? Specifically the Innovative twin-screw kit.

Some people don't understand that !

[thebear21]

so for some reason this is my favorite so far. I know john does goody work, and he works with everyone. but what are your thoughts on vortech vs innovate? I'm really torn! I love the reliablity of vortech but the innovate just looks so awesome/ has so much potential.... thoughts?

[Visconti]

Originally Posted by thebear21

so for some reason this is my favorite so far. I know john does goody work, and he works with everyone. but what are your thoughts on vortech vs innovate? I'm really torn! I love the reliablity of vortech but the innovate just looks so awesome/ has so much potential.... thoughts?

No comment yet !

[sw20kosh]

He just put up a 91 octane plot in his Classified Ad for this kit. =)

240 whp for stage 1. Lookin good!