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Post by tjohnson on Dec 8, 2016 22:44:54 GMT -5
i have a fresened up 302 that i put a big cam into, www.compcams.com/Company/CC/cam-specs/Details.aspx?csid=903&sb=2and i used the base tune from diyautotune, which got it started but im having issues with tip in. so far ive only warmed it up and tuned the fuel table at idle and revving it to about 4k. i find if i blip the throttle it revs fine, but if i slowly roll into throttle, it leans out for a second or 2 and then revs up and seems normal. any idea what might be causing this? thanks
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Post by wesk on Dec 8, 2016 23:10:45 GMT -5
What are you using for MAP SENSOR hose?
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Post by tjohnson on Dec 9, 2016 0:13:02 GMT -5
2 short pieces of 3/16 silicone hose and the rest is 3/16 brake hard line
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Post by Stinger on Dec 9, 2016 0:25:05 GMT -5
Is the silicone soft enough to squeeze it shut with your fingers without much effort? This problem typically is from the hose expanding/sucking shut which is why we're asking about this.
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Post by tjohnson on Dec 9, 2016 0:31:10 GMT -5
It is pretty easy to squeeze.
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Post by Stinger on Dec 9, 2016 0:51:53 GMT -5
I'd suspect that's the problem. If you've got a hard piece of rubber hose laying around to try, do so. Otherwise pick up a thick wall hose to do the job.
This is why we supply the hose with the PiMP, because using the right hose matters.
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Post by tjohnson on Dec 9, 2016 16:50:06 GMT -5
I will replace it. I'm thinking EFI fuel line will be stiff enough.
Would I be able to acquire your guys base tune? Just to try it, as I trust your guys fuel and spark maps better than diy
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Post by wesk on Dec 9, 2016 17:51:21 GMT -5
Would rather not take responsibility for hardware they do differently.
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