Built motor, t3 super 60, megasquirt.

[yellerandahalf]

wow, 20 degrees total timing. that's a good bit, on stock compression!
I need to get knock sensing before I push it any harder. Plus, I'm running high enough cylinder pressures that any more power just blows out spark. Need a boost-a-spark.
-Mateo

 

[mazdaspeed75]

You think that 20 degree total timming is good . Sam said that he seen 25 degrees with a pda scan tool and that we need to be like 20 degrees or so . Total timming .

 

[yellerandahalf]

damnnnn! 25 degrees! good LORD! I really hope he's not talking about full load, high RPM! I assume he means when boost is starting to come on, low RPM. Otherwise, wow... That's crazy.
-Mateo

 

[mazdaspeed75]

What timming do you run at full boost .

 

[yellerandahalf]

17, and on 8:1 compression too... it feels like it needs more, getting really jumpy up top all the time. But that could also be floating the valves.
-mateo

 

[HiBoost TS]

Good job! Keep it going

 

[yellerandahalf]

Whoa! I got a compliment from HiBoost! Hot s***!
Oh, and for all you haters saying I couldn't make any power with the log manifold, and that it was causing the boost creep, HAH! not so much!
-Mateo

 

[yellerandahalf]

hiboost, looking at the graph, how much more timing do you think the car needs up top?
-Mateo

 

[HiBoost TS]

hiboost, looking at the graph, how much more timing do you think the car needs up top?
-Mateo

It depends on many factors. The best way is to go little by little and see what results you get with the changes. Please no not allow the engine to detonate as that will destroy the engine. Ussually the limit is detonation and of course watching your A/F ratio.

Juan

 

[mazdaowner123]

hey matt,
I'm in richmond .

~brian

 

[yellerandahalf]

alright, thanks. How much total timing have you been running on 8:1 CR engines? (so I might have some kind of reference point) Thanks a bunch.
-Mateo

 

[HiBoost TS]

alright, thanks. How much total timing have you been running on 8:1 CR engines? (so I might have some kind of reference point) Thanks a bunch.
-Mateo

I am running 24 degrees total timing at 20 psi of boost, but that is on 110 octane fuel.

At 15 psi I am running like 26 total advance on 91 octane but I have 8.5 to 1 CR. We use the Haltech, which will retard or pull timing according to load

Juan

 

[yellerandahalf]

as in like, 15psi, 6500 rpm you're at 24 degrees of timing? Holy friggin moly! I'm gonna crank it up a few degrees! wow!
-mateo

 

[peepsalot]

hey yeller, if I understand correctly, Megasquirt fuel is tuned by adjusting a table that represents volumetric efficiency at different rpms and pressure. I'd be very interested in seeing what the VE looks like if you could post up your current map. I know it will differ from engine to engine, but it'd be nice just to get a general idea.

 

[yellerandahalf]

Juan, How is octane rated in Columbia? I'm going to make a few changes on my map based on the information you just gave me, that is assuming that the octane levels are rated the same as they are here. Is there any way you could send me a little snapshot of a timing map for one of your street/roadrace cars so I might take a look at it? (also include what fuel they're running). That would be super-useful, and I promise not to create competition for you or distribute it. Muchas gracias.

Peepsalot, here's a look at my current VE table. You will notice that the VE's start coming back down after the torque peak. I found that interesting that they didn't continue to rise with RPM. enjoy your looking, I'll be happy to show you the rest of the tune as well.

VE map
and timing map
for your convenience.
-Mateo

 

[HiBoost TS]

Juan, How is octane rated in Columbia? I'm going to make a few changes on my map based on the information you just gave me, that is assuming that the octane levels are rated the same as they are here. Is there any way you could send me a little snapshot of a timing map for one of your street/roadrace cars so I might take a look at it? (also include what fuel they're running). That would be super-useful, and I promise not to create competition for you or distribute it. Muchas gracias.

Peepsalot, here's a look at my current VE table. You will notice that the VE's start coming back down after the torque peak. I found that interesting that they didn't continue to rise with RPM. enjoy your looking, I'll be happy to show you the rest of the tune as well.

VE map
and timing map
for your convenience.
-Mateo

All my tests for the Protege have been done in Los Angeles on 91 octane or in Miami with 93 octane fuel. One of my customers just did 270 whp on his protege with our setup and stock timing computer. This means that the total timing advance is stock and at 16 psi of boost on 93 octane.

Juan

 

[yellerandahalf]

All my tests for the Protege have been done in Los Angeles on 91 octane or in Miami with 93 octane fuel. One of my customers just did 270 whp on his protege with our setup and stock timing computer. This means that the total timing advance is stock and at 16 psi of boost on 93 octane.

Juan

cool, thanks. added 2 degrees, no knock. time to go 2 more.
-mateo

 

[yellerandahalf]

o, and btw, I made 280whp at less than stock timing, at 16psi hardeeharhar.