I had my ECU tuned by Ray at SR. I would like to compare his changes to the fuel and ignition maps to the base maps, does anyone have a link to an excel sheet with them? I looked at the maps Jason has had sent to him, I didn't see a base map though. Can anyone help me out?

Richard

 

look under base maps under this section, they are there.

 

Go to


https://www.rx7club.com/vforums/show...threadid=34705


for base stock USA.

 

USA base mod.

 

I hope this hasn't been discussed to death, but I'm just getting into my PFC tuning research. I'm confused because when I compare the fuel section of the mod and stock maps that Chuck provided I see very few differences (only eight cells). With all the talk on these boards about the dangers of running lean when adding mods, I'm wondering why this is so.

Thanks...

 

The difference is in the timing. Compare the IGLs maps.

 

Here is a comparison I did on the BaseMod Map and the BaseStock Map.

I subtracted all the BaseStock values from the BaseMod values.

As Chuck mentioned, the only real difference is in the timing.

Chuck,

Seeing that the fuel is basicaly the same between the two and that the BaseMod has more agressive timing, would'nt the BaseStock map be the safer of the two maps to run regardless of the mods on the car?

 

Forgot to attach the file:

 

I had the same questions. I thought the stock u.s. maps were a little advanced, and I wanted to retard the timing a bit. But if the base maps by Ray are more advanced, than I'm missing something here. Anyone with some good insights?

eric

 

You are looking at your data wrong. To prove it, go compare cells 20,20 to 20,20 of IGL. The mod has 8 less, 25 to 17. That is 8 less for the mod. You are showing -8 which is OK because 17 = 25 - 8.

 

I just compared the stock maps to my maps. My mods are listed in my signiture, but basically, dp, mp, cb, intake, FMIC, pulleys, PFC. The difference in my fuel map can be seen if this downloads right. Can someone tell me why the only thing really changed was the bottom right hand side, but I don't run that much boost or rpm so I basically have a stock map, correct? I looked into this because all the orther FDs with stock maps and dp, mp, cb, intake are running rich compared to me. I constantly hear pops coming out of their exhaust and mine doesn't. Also, my O2 readings are a little bit on the low side (0.85v) Suggestions?

 

Well, I had to pick one of two ways to look at it. I choose to take the mod map and then subtract the stock map from it. I could have done the oposite which would have just made all the positive numbers negative and all the negative numbers positve. Either way, what do you think of the question i asked earlyer;

Chuck,
Seeing that the fuel is basicaly the same between the two and that the BaseMod has more agressive timing, would'nt the BaseStock map be the safer of the two maps to run regardless of the mods on the car?

 

Roadracing7 - If you get a chance, please post an excel file with all three maps in it (like the ones on the board). I'd love to run some comparisons of your numbers for myself. You say your maps are freshly tuned by Ray for the mods in your sig?

 

Everyone seems to be running more fuel than me that I see, so why is this the case? I was under the impression Ray tuned on the rich side. I'm getting the 0.85 O2 reading under .8 boost, so I'm very nervous about running any more boost. I will get the rest of my maps up tonight so that you all can see how Ray tuned it. Should there be a difference in the fuel maps because of a street port, and if so, how much? I'm tempted to try someone else's maps, I figure if anything, they'll be too rich for me.

Richard

PS. Chuck what mods do you have on your car?

 

FD Racer,

"and that the BaseMod has more agressive timing, would'nt the BaseStock map be the safer of the two maps to run regardless of the mods on the car?"

The mod set is only hotter from about 1200 to 4000 rpm where your engine isn't breathing much, low torque. Above that the mod set has less advance. Remember that a modded engine's torque curve usually shifts upwards and it is the area of max torque plus revs where thing are more dangerous.

The mod set is really safer. If you are not pleased with this, then use the PFC as it was designed, to customise as you wish. Use part of the stock set for low end and the mod set for high end. After all, I have modded my IGL map a little and my IGT a lot.

I think the mod set low end is really designed more for single or non-seq turbo engines. They have less boost down low and having more advance there is good for them. Definitely helps my low end.

Good luck dicing and mixing. We need more people who will "push the envelope" more.

 

I'd love to push the envolope with mine but not without a wide band. I have my power fc back from xs and should have my motor back in by this weekend (I tried pushing the envolope )

I think I'll record my xs map and then head for a dyno or buy/borrow a wide band somewhere to see how the a/f looks on the xs map.

I'm surprised there arent more people trying to dyno tune these!!!! I would dyno mine in a heart beat but there isnt one around. I'll prob head to a dyno in TN but it will most likely be in Jan since its about 5hrs away.

Later,
STEPHEN

 

Just a few notes on dyno tuning.
(1) It does not load the engine as well as a real life 4th gear run.
(2) Use 4th gear instead of 3rd for better loading.
(3) Your IC does not cool as good on the dyno as on the street at speed.
(4) Thus you need to tune richer on the dyno.