Advice with log

[MilitaryTalon]

Alright I just went out and did a little tuning and here's what I got:

http://members.cox.net/alan_sison/pulla.csv

My AFR's are good throughout but my timing is pulling as you can see. The car feels like it looses all power around 5500-6k. I added timing but it just gets worse. I put all my timing maps back to 0 all the way across the board and that seems to be the best result so far but it has a lot more to give. Can anyone give me some feedback on the log above and what I can do to improve it.

 

[MilitaryTalon]

Maybe this is better. It's te best I can do for now though.

 

[bboyalan]

Hey Matt! I sent you two PM's. Let me know what you think.

 

[JayRolla]

I dont see timing advance?? Or I do but it says zero through WOT. I dont know how to see if you detonating without reading that. But if you are getting timing pull up top that is most likely detonation. So if you add timing its getting worse due to more detonation. You need to pull timing where you get detonation.

You can always make more power with boost than timing. So more boost and less timing is the way to go. On pump gas I like to run 14-18* max timing depending on how much airflow is moving.

 

[bboyalan]

The timing advance is on the far right. It's easier if you delete the other useless columns. He's doing 23 pounds on pump-91 w/ Methanol injection. Upon WOT, Timing starts at 18* @ 2.9k, slowly drops to 2* by 5.3k, and ends up back at 8* by 7k. It's true that less timing + more boost = more power, but too much pulled timing isn't great either obviously .

I've attached a screenshot showing the end of the WOT pull. His IDC's aren't maxed as you can see. Would gapping down the plugs or going 255+AFPR do anything good you think?

 

[rush2252]

If hes running the METH injection correctly this should keep the knock down. Its hard to say from those logs. Hes running the 660s w the wally 190 still on 23psi??

I would say that an afpr and the 255 would definately not hurt anything. How is he compensating fuel without and afpr at the moment??


Kolby

 

[MilitaryTalon]

If hes running the METH injection correctly this should keep the knock down. Its hard to say from those logs. Hes running the 660s w the wally 190 still on 23psi??

I would say that an afpr and the 255 would definately not hurt anything. How is he compensating fuel without and afpr at the moment??


Kolby

The only way I can compensate for having small inj and pump right now is running straight meth instead of water/meth mix.

I know I prob need a 255 and AFPR and bigger inj, but for now this is what I got. What should I do to make the power band continuous throughout? Turn the boost down?

 

[MilitaryTalon]

Alright I added a little fuel today and did a couple of pulls to see if the knock would settle down. My second gear pull looked a little better but the 3rd gear pull looked crazy I don't know what was going on. I had to get my son home so I couldn't do it again I'll try again tom. Any advice guys?

 

[rush2252]

If you wanna go fast you gotta pay the price. I think your just going to have to break down and spend some green on a better fuel setup.


You IDCs are in the high 80s which isnt bad you might be able to just do an AFPR for now and squeeze a little more fuel from the 190. Some people will say to tune the IDC to 100% across the board but id say the 80s would be the sweet spot. Your there now and seeing knock. Have you thought about running a few gallons of 385 or race fuel? This might help with the knock

Kolby

 

[MilitaryTalon]

Yeah, I think I'm gonna go ahead and break down and buy a 255, AFPR, and 950's. I got a stock EPROM chip so I can tune with different inj now. I'm gonna start with the 255 then AFPR then bigger inj. Hopefully this will solve my issues. I'm prob still a few weeks out from getting these items though so I guess the car will have to sit for a little while.

 

[JayRolla]

If you have good afr at wot, 10.9-11.1 all they way through the rpm band than you dont need the pump and fpr. I think you need to pull some timing or turn the boost down to see if its real knock or not.

 

[bboyalan]

In your new logs, it appears that you had lower IDC's in third and higher in second; that's WEIRD considering the different load. I can see that you didn't carry it as far, but it's still less. You should check your knock sensor out to see if it's loose or even functioning properly.