Hydra right?

Stock cams?

What AFR?

How much timing?

 

Hyrda, BC NA cams, afrs were high 11's low 12's, for the timing id have to call my tuner again.

 

You think those n/a cams made a difference?

 

Stage 2 N/A? I have an excellent N/A map for those. LOL

Anyway, with these cams, they seemed to like AFRs as you are approaching "0" PSI, about 24-28 degrees of advance from 5500 and an AFR of 11.9:1 and tapering into redline being about 11.0:1. This is the Vac side. This will give you an idea of the type of timing you should see entering boost.

The real key to this engine with these cams seems to lie with a slightly richer AFR and a fair degree of timing. For example, as much as 31 degrees of advance was able to be added at WOT N/A with these cams. Try to keep atleast 18 degrees of advance at worst case scenario in boost.

Don't be overly concerned too much with AFR and making power. I did some testing with adding more timing, richening AFRs, leaning AFRs out and such and in the end, I found out that there was a minimal difference on these cams from power made with a 12.7:1 vs a 11.0:1. There was just a single digit power difference and air flow difference from all of the combos tried.

So, in a nut shell, run the richer AFR for less propensity to knock

 

Dezod when your in Miami you should tune my car!!!!!

 

Now that I think about it yes the cams are what have the timing pickup so perhaps timing is a bit "off". EGT's seemed low so perhaps I just have to back off timing more so than I would normally do. I guess we can try both ways at lower boost and see what happens. Difficult to do on the street though. May need dyno. Will also play with cam advance as well. AFR's were hovering at 11.5:1 or so. Never really went that high in boost. Started having issues over 1 Bar.

 

What kind of "issues"?

Richen that up a tad more. You should a very small level off in power, but it will be good for knock control.

 

I think a lot of power is hidden on the VCT map.. I asked hydra about it and he said the default vct map was made on the tc NA platform and you would need to tweak that.. especially you have cams it might benefit you more. Im having problem with hp too, and we tuned on the dyno. I got a good torque 251 at 5 psi, but as rpm rises there is very gradual increase in hp made only 218 at 7psi. Afrs are almost dead on to 12afr.. timing was increasing up to 25 at WOT redline..

As I checked the VCT map, from + figures it gradually decreases down to 0 to - figures on top and i think thats where I see the problem is..

Oh 1v knock thresh might be low especially on higher rpm, did you guys hear the actual knock? coz on mine (stock motor) its almost impossible to hear due to turbo system noise.. Maybe you go up a significant amount with the knock threshold, see if you are still making power while you advance and if you do, you're still not at MBT and i doubt those voltage are real knocks.. by theory you should stop making power when you are knocking.

im on E85 by the way.. im dynoing soon and will be doing the VCT map see what happens

 

+1...

can you post up pics of the data-logs of the dyno runs where you guys think you were knocking? i wanna see what thy look like. if it is around 1 volt and it is somewhat constant with a smooth or flat top to the point, then it is most likely engine noise. if the knock looks like a sharp spike and is above the rest of the engine noise, then you know you have detonation.

 

Looks good dude

 

They were sharp spikes to the knock voltage. At lower boost pressures all was smooth rising to maybe 0.7-0.75 volts smoothly. No knock. Higher boost pressures, it would go up smoothly to maybe 0.60-0.65 and then spike to 0.85 or higher. Was not noise. Very clearly can be seen on datalogs and I want to play more with timing I think as well as cam timing. Gonna take a while that is for sure but we'll get it.

 

Well hopefully we can hop on the dyno again soon. New plugs should be here anyday now. and the gas is almost gone.

 

When you go back let me know ill come back out =]

 

let's go cruise tomorrow! you can crank up the AC on high to burn the gas faster! ^^

 

gotcha. well good luck.

 

Im very interested how much good will hydra vcti tuning do.. i've been wanting to that but damn expensive dyno..

 

im up for some crusin' Friday night if you guys arent to busy with them there fancy bikes!!

 

Yea just got home from the Royal Oak bike night. The bike is alot of fun for sure. Still a car guy at heart. I'll have it out this weekend for sure.

 

Godzilla is clean. Maybe I'll stop by woodward tonite.

 

vids. is it running 9's yet dan?