Background: I have 680cc injectors (scaled using the XEDEflash), RX6 turbo, basically a similar setup as your stage 3.

On my old GT3076 map, I never saw a load over 35 until over 6000rpm when it would jump into the upper loads. With the RX6 turbo, it actually moves up through the loads and RPM more linear. Does the XEDEflash add more fuel as the load increases (higher load number at a lower RPM)? My new map is pulling a lot of fuel out and I am worried that I may run into issues w/ the timing.

As can be seen on my excel graph, I have a real rich spot between 5500rpm and 6500rpm. This is kind of odd, since I would have to lean it out more in that area then in the surrounding areas. What is your opinion on this?



I am also having some boost issues (It stays at 15psi for a second then jumps to 20psi). I think this is due to the bigger vacuum lines, the .8 bar spring, and using two restrictor pills though.

Other then these issues, I absolutely love this turbo .

 

Also, what happens when I hit 100% load? Right now, at 20psi, I am at 80%. Will I just have to tune the last load cell for any load over 100%?

 

I don't think you will never hit 100% load. The closest we've ever gotten was 90%. And that was with a GT35R running 33psi of boost. The MAF response curve gets a little nonlinear up there.

-shiv

 

nm... be back later to check your maps out...

Shiv

 

For better boost control, I am thinking about using the XEDE to control pressure (Tee's of the BOV) to the top of the wastegate and just connecting the turbo signal to the lower wastegate port. I may get crazy boost creep though. A bigger boost solenoid would be nice .

I do have a 1.4bar spring on order, but I have no idea when it will be here. I may have to get a MBC for the time being.

 

A 0.8bar spring is way to low if you want to use the boost control solenoid in the traditional way. You'll have a much better time using a 1.3-1.4bar spring and boosting up from there.

Shiv

 

I know, but the .8 bar was the only one available. I had a 1.2 bar in my GT kit and it was slightly to small too.

Have you had time to look at my maps yet? It just feels strange taking out so much fuel w/ this turbo then the GT3076. I took out some more in the problem range (5500-6500rpm) and I am now up to 10.2:1 which seems good to me. SMART timing has been quiet too. This kit makes less noise then my GT kit.

 

Getting better...... bump for Shiv

 

Bump

 

Hi jj 008 what are you using to log runs like that ?

 

These plots were made using Excel. The data was generated from my Zeitronix wideband, but you could also use Commslog or PyXEDE.

 

Thanks Shiv, for answering my questions over the phone today .

 

Almost there . This particular trace is a little ugly and wasn't a full WOT run to redline.

I hit 95%, but I accidently clicked on the map and lost the trace. My injectors are barely going to work though. More fun to come .

 

More questions for Shiv:

Can I add positive timing in the regions of the map where boost is low? Like the 3500-4500rpm range where I am making 7-15psi. What increments should I use?

What timing increments do you use when adjusting the timing map? I had a knock event happening in the 5000-6000rpm range so I took out -.5 from my zero'd out timing map and got rid of it.

Also, do you have any tuning tricks, that you would like to share, regarding tuning for faster spool up?