95Black50 said:
I'm not against spending a couple hundred bucks to move up to 30's if it's going to make a more "stable" combo. Since I had the 24's stock I had just thought I could get away with them.
When I was planning this combo I had set a goal that I would not skimp on any details that would affect the power, driveability, and longevity of the vehicle. I'm not the kind of person that likes to drive components to and past the edge. I would rather see an injector duty cycle at or below 80% at max RPM so I know I have a little more breathing room if things go wrong.
Looking at everyone else's combo's it seems that I might have better success running with the 30's with the type of combo I'm running.
Maybe a few pounds of fuel pressure would help my 24's support my combo, but if they're pegging past 100% at 5400 it makes it hard to beleive a few pounds would bring the duty cycle down to a level that I'm comforable at running at 5800-6000 RPM.
Final5-0, your comments and suggestions have been appreciated throughout my project. You bring up some very good points, and seeing that your combo uses 30's (with great success) pushes me toward that side of the desicion even more.
I'm going to be running at the track for the first time tommorow, and of course I'll be logging. I want to get a baseline of how she performs before, and then after the tune. Maybe I can post the logs and see if that can help shed more light on this problem. I've only had this tweecer for 2 days now and I know I don't have a handle on the whole datalogging thing like many other members on this site do.
Thank you for the kind words Chris
Since you be a noob
tweec geek, lemme give you a thing or two to think about ... OK
The move to 30's will take you a while to get everything dialed in just right but at your power level... I do think its a wise move
Here are a few things to start your research on that will help you.
Lets talk about your C&L maf
With you being just two days old, (in Tweecer age that is) I'd be willing to bet you are using your maf in
cheat mode.
First thing you'll need to do is load in the transfer curve for your C&L ... if no other C&L users fill you in here, you can get the details at the Tweecer site as there are a lot of C&L users there.
Now lets talk about those 30's
Use the following items to load in 30lb values
low slope - scalar
high slope - scalar
inj offset vs batt voltage - function
breakpoint - scalar
EEC Analyzer can help you tremendously with the above items
That should be plenty to get you started when you decide to work with the 30's and your C&L curve
Again ... I'm not all that sure the inj duty cycle you see in your dlogs can be trusted. Search around on the Tweecer site to confirm unless one of the other members can verify my concern here is valid or I'm romin around way out there in left field
You know what Chris? ... It just came to me
You could always juice up the pressure by about say 6 pounds and see if the duty cycle goes down
Then again, if it ain't accurate, how is that gonna help
Sorry for the senior moment
I'd better press on
We have gotten quite a few self tuners here so be sure to search around a bit for some excellent research.
I got a little bit of stuff on my site as well that could help I reckon.
Good Luck at the track tomorrow Chris
Since its your first time ... hope you have lots of fun
Grady