New dyno results!

[Top Toy]

Per the comparison chart, the AFR is hovering around 13.3 in the upper range.

[jss06c6]

Good numbers! My results on our Mustang MD100 dyno were 406/374 at wheels. My mods are exactly the same, ported top end including port matching heads and a full Stainless Works exhaust from headers to tips.. congrats, now get her out and enjoy it!

Fyi, I dialed my WOT AFR in at 12.8:1.. you should be fine at 13.3 as long as you didn't see any knock..

Sent from my SM-G950U using ZR-1 Net Registry mobile app

[XfireZ51]

Originally Posted by Top Toy

Per the comparison chart, the AFR is hovering around 13.3 in the upper range.

Looking at the comparison chart, ur right Dennis certainly when the AFR was up around 13.8-13.9. Not as concerned at 13.3, but like u, I would feel more comfortable and likely may pick up a bit more power by dropping AFR further to ~ 13.
Again, would be very helpful to see if any knock was present and where.

[ALLTHECAMS]

Originally Posted by XfireZ51

I would not characterize the AFR in the upper rpm range as dangerously lean.
13-13.1 I believe is fine. Frankly, I would lean out that “sag” in the mid range and probably take out a bit of AE in the upper part of the AE table. I would try a bit more fuel in the top end just to see which way the power goes as a trial.

What was the SA for these run? Did u check for knock?

What is SA? We didn't check for knock.

Sent from my XT1710-02 using Tapatalk

[Ccmano]

Originally Posted by ALLTHECAMS

What is SA? We didn't check for knock.

Sent from my XT1710-02 using Tapatalk

SA is spark advance. You can advance the spark timing and make more power until you get knock. You kind of take it to the edge where knock begins and then back off.
H

[ALLTHECAMS]

Originally Posted by Ccmano

SA is spark advance. You can advance the spark timing and make more power until you get knock. You kind of take it to the edge where knock begins and then back off.
H

The chip was done by Marc so it's whatever he set it at.

Sent from my XT1710-02 using Tapatalk

[XfireZ51]

Originally Posted by ALLTHECAMS

The chip was done by Marc so it's whatever he set it at.

Sent from my XT1710-02 using Tapatalk

Well as an additional margin of safety, it would be prudent to monitor for knock.
I do my own calibrations but concurrently monitor AFR and Knock.

The LT-5 is not prone to knock at the top end. If u keep advancing timing say in the 6-7500rpm range, you will find that it simply loses power. However, there is a point between 4000-5500rpm where u will see knock if timing is too advanced. Also, it helps in terms of adjusting the AE (acceleration enrichment) which may also cause knock if insufficient.

So as a rule of thumb, good idea to datalog not only AFR, but also the ALDL
stream if u can.

[Ccmano]

Originally Posted by ALLTHECAMS

The chip was done by Marc so it's whatever he set it at.

Sent from my XT1710-02 using Tapatalk

Marc advances timing about 10% or 2-3 degrees.
H

[ALLTHECAMS]

Originally Posted by XfireZ51

Well as an additional margin of safety, it would be prudent to monitor for knock.
I do my own calibrations but concurrently monitor AFR and Knock.

The LT-5 is not prone to knock at the top end. If u keep advancing timing say in the 6-7500rpm range, you will find that it simply loses power. However, there is a point between 4000-5500rpm where u will see knock if timing is too advanced. Also, it helps in terms of adjusting the AE (acceleration enrichment) which may also cause knock if insufficient.

So as a rule of thumb, good idea to datalog not only AFR, but also the ALDL
stream if u can.

What do you use to datalog?

Sent from my XT1710-02 using Tapatalk

[XfireZ51]

Originally Posted by ALLTHECAMS

What do you use to datalog?

Sent from my XT1710-02 using Tapatalk

I have used EASE Diagnostics, but now ALDLdroid which is a tablet based datalogger. U can also use TunerPro.

ALDLdroid demo:

https://youtu.be/sLrPRDh7K8I