Thread: Tuning My Calum R/T

Hmm, you make a good point, I hadn't looked at it that way. Might explain perceived richness (smell) and carbon build-up on muffler, despite wideband not generally reading rich. I'm going to throw some new upper/lower inj. seals on there and see what happens!

I am still using the VE 330/333's!

Are you considering upgraded springs when you go back to turbo? Might be an idea for safety's sake. Especially with all that big VE unnaturally aspirated powah! I guess if you are running VE, 20V or VET cams then maybe you won't be revving above 7500 or 8000ish anyway...

Fuel smell is another good indicator of being rich. What wideband are you using and where is it mounted again?

I would rather not get stiffer springs, that's more strain on drivetrain/worse gas mileage. My reason for going VE is for gas mileage (that I haven't seen yet :-P). Though once I go boost again, on a T2 turbo I doubt I'll be able to get any power/flow after 7k rpm anyway. But I might use 16VE cams over N1 cams that I currently have in there now.

Using a new AEM UEGO. Mounted in the stright/mid pipe just after my hot-shot 4-2-1 converges into the single collector. Actually, just after the flex pipe.

Supertech does have the 93 lb. springs which are only slightly stiffer than the stock VE's, which I believe are 70-80 iirc. Lighter too when combined with the Ti retainers, so that would probably help off-set the stiffness/gas factor a bit.

Stockers for me too, for now anyways. Uprgraded springs in the future!

Not bad on the springs then!

Wideband location/Gauge itself seems fine. Where are you grounding the wideband btw?

Wideband is grounded under the dashboard. The thick solid steel beam that runs under the dash. Clean, unpainted, thick, tied into the chassis.


E: Planning on regrounding everything and cleaning up the engine harness and all my wiring when it gets warmer. It's fine now in function but not up to my standards aesthetically.

Try this, run a wire to your intake manifold, and ground it where the ECU grounds are at. My UEGO was off by a few AFR's until I did that myself.

I'll try that. I have to reground the MAF anyway so I'll do those together and see if there is a big difference or not.

Vadim, can the Calum ECU understand if I add a 17th table (row) to my timing/fuel map RPM tables? I added in a 17th row @ 7800 RPM so I could make necessary changes up top but want to know if this is something that is normally done and cool to do? Otherwise I will just go back to 16 rows and modify all the tables but the RPM values would start getting further apart at this point. Seems to make sense that if you can change it within the settings, the ECU should be able to read it but just want to be sure!

Thanks.

Definitely not. When you "added" a 17th row, you actually overwrote another table used for something entirely different. The ECU is just a computer and has to be programmed for those kinds of changes. When you modify the "tune", you're just changing the data the ECU program uses, and there is no editable value that specifies the size of the fuel/timing maps.

Dave

^ Thanks Dave. At this point I am only messing around with a spare .bin file on my laptop so no harm done. I thought it might pose an issue but I did not know why.

So, I will go back to 16 rows on the fuel/timimg maps. Would there be an issue with me changing the RPM tables for these same maps, still within the 16 original rows? I would have to manually change them as I can not edit them in the normal way. For instance, changing the last row from 7200 RPM to say 7800 or 7950 RPM? I would abviously adjust the others a bit as well to make the variances between them similar. Any suggestions? Will this work?

TIA.

Yes, you can change the fuel/timing map scales.