Aftermarket Cams in the 3.1L

[IDCavalier]

So it might be that I am adding too much Initial SA?

That makes sense because I can't add much SA in the table values w/o knock alerts or loss of power.

Do you know the timing limit of the LHO heads?

I will turn the Initial SA back, but I'll call Bob to do it, because it has to be done in the hex editor for that high of a value.


Thanks!

i get the feeling it's due to the way the EBL algorithm works.... very few masks got both an initial advance and spark reference angle value.... or at least, very few were labeled as such. technically, all of them have a spark reference value, but most just call it initial advance, since that's what the distributor is set to.

in A1(and the other 60V6 MPFI stuff), ref angle is what they refer to as "initial advance" and initial advance is actually the first spark advance value used when calculations are done. so basically timing while cranking(for at least a revolution anyways).

so, i'd change it to 60 and if necessary, play with other stuff to get the cranking advance correct.

[IDCavalier]

Do you mean the EBL P4 Flash system?

It ran my car, but I only let it start up and idle. Jumps right up to 1200 RPM. I am not going to drive it because I have no idea what its doing without datalogging ability. That and I have no idea if the stock hardware is going to work with a chip designed for a different board.

[SappySE107]

It ran my car, but I only let it start up and idle. Jumps right up to 1200 RPM. I am not going to drive it because I have no idea what its doing without datalogging ability. That and I have no idea if the stock hardware is going to work with a chip designed for a different board.

[robertisaar]

i get the feeling it's due to the way the EBL algorithm works.... very few masks got both an initial advance and spark reference angle value.... or at least, very few were labeled as such. technically, all of them have a spark reference value, but most just call it initial advance, since that's what the distributor is set to.

in A1(and the other 60V6 MPFI stuff), ref angle is what they refer to as "initial advance" and initial advance is actually the first spark advance value used when calculations are done. so basically timing while cranking(for at least a revolution anyways).

so, i'd change it to 60 and if necessary, play with other stuff to get the cranking advance correct.

[Superdave]

the value you have for Initial SA seems wrong. I haven't used an EBL but in the other OBD1 masks for the 60v6 initial SA is 9.14 degrees. ($A1 code which is stock for your car)

In the standard masks we also have a value called "Spark reference angle" which is 59.86 degrees (60).


Your value of 69.96 looks like he added those 2 together.. which is what his mask may need but I'd ask him about it, he may have more info as i know nothing about how he's designed that mask.



Also, that extended SA table needs some work



I looked into the EBL for mine, it has some cool features but i just stuck with the '7730 and bought an emulator to tune the code that was built for the engine/platform. i ran that in my '91 Z24 with various wild engines for 9 years and have had the same ecm in my Camaro for 3 years now. (Search user "Whitelightning2" on Youtube for videos of my Cavalier and Camaro)

Since your car is still stock the most you'll pick up from tuning is like 5 or 6 HP, IMO it's just easier to run the stock tune till you get into wilder engine builds. Then you'll at least get to enjoy the car.

[IDCavalier]

I can leave the wb hooked up to watch the afr, but I can't datalog without the P4.

[IDCavalier]

I do.
But I had to do some pin swaps for the EBL P4, so it will take a little time to swap it back.

That's a great idea though. I have not used the stock ecm since long before I readjusted the lifter preload.

Which, by the way, was actually discovered by Bob over the phone. I was telling him about the cam swap when we figured it out.

Noticed that, still see some things in the bin file that don't look right though.


IDCavalier, if possible do you still have the stock computer and chip that you could swap back in to the car? That would help point us in the right direction.

[IDCavalier]

Yeah, he's good!

I am new to tuning so I don't know what a constant is.

I know that the EBL P4 Flash is badass tho. I just wish I could make the most out of its potential.

There are a lot of things called scalars in the advanced xdf that I don't know how they might affect performance.

Bob has been a great help to me.

What is TGO?

[Superdave]

Noticed that, still see some things in the bin file that don't look right though.


IDCavalier, if possible do you still have the stock computer and chip that you could swap back in to the car? That would help point us in the right direction.

[ericjon262]

nope, flat tappet. Same cam as the gen 1's

.1 is not proper lifter preload at all, it should be around .040".

Can you post up your bin file? There are a few constants that could cause some pretty large power losses that a non 60v6 guy might not know about.

Bob @ Dynamic EFI is pretty good on tuning, he's one of the Mods on TGO, I'd imagine he would have caught it if one of the constants was off.

[IDCavalier]

EBL_P4_V10_ADV.XDF

BATZ SA_HRST_CCP_EGR_ON_SA_Max_38_00023.bin

OK

Here is the MOST RECENT bin file and the advanced XDF to go with it.

[IDCavalier]

BIN file

Here is a recent bin file ...

I may have made some fuel trim since then, but otherwise it's the same one I'm running now.

2012_Bosch_Injectors_00004.bin

[IDCavalier]

Right. Flat tappet.

Wow! Sure I can post the bin, but I'm not sure how to do it.

Is there a drop box or something? Never mind - I figured it out

[Superdave]

nope, flat tappet. Same cam as the gen 1's

.1 is not proper lifter preload at all, it should be around .040".

Can you post up your bin file? There are a few constants that could cause some pretty large power losses that a non 60v6 guy might not know about.

[ericjon262]

did the gen 2 motors get roller cams?