turbo 4.3 sonoma project.
11-29-2009, 07:12 PM
#116
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Join Date: Dec 2005
Location: Round Rock,TX
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got to remember fellas that boost tends to keep making power a little bit longer.... on my truck, an import but still, i used to fall off power at 5k before boost, now with boost it is still climbing at 6300 where i shift now.
11-29-2009, 10:47 PM
#117
thanks Tom at C&S. he got this thing dialed in quickly.
got some numbers and some video, video will have to wait till tomorrow. numbers seem great to me.
the truck was baselined at 180rwhp. not sure of the tq. we lost the baseline runs. mustang dyno, unlocked, 3rd gear.
i have 3 sets of numbers
unlocked tuned to 22deg timing and 8.5psi max, mid 11's a/f. 304rwhp/379rwtq
then locked and tuned to the same numbers as above 315rwhp/434rwtq
last numbers are from an early attempt to run a higher spring. only made one run since it was clear we were going to be very close to running out of fuel. injectors were at 100%. a/f in the high 10's, timing around 18deg, boost at 11.5psi. 334rwhp/400rwtq unlocked. based on what we were seeing pulling fuel and adding timing at the lower boost level i would say there is an easy 15hp on top of that once tuned but we didn't want to have it on the edge of being out of fuel.
seems like great numbers for only 8.5psi, this seems like a very safe setting. there is a ton more in it when/if the owner wants more down the road. a cam would do wonders. right now just some injectors and we could turn it up to 350rwhp. put a cam in there or some race gas and lots more boost and 400+rwhp seems likely. turbo is conservatively rated at 585fwhp.
here is a chart showing the 8.5psi unlocked vs locked.
got some numbers and some video, video will have to wait till tomorrow. numbers seem great to me.
the truck was baselined at 180rwhp. not sure of the tq. we lost the baseline runs. mustang dyno, unlocked, 3rd gear.
i have 3 sets of numbers
unlocked tuned to 22deg timing and 8.5psi max, mid 11's a/f. 304rwhp/379rwtq
then locked and tuned to the same numbers as above 315rwhp/434rwtq
last numbers are from an early attempt to run a higher spring. only made one run since it was clear we were going to be very close to running out of fuel. injectors were at 100%. a/f in the high 10's, timing around 18deg, boost at 11.5psi. 334rwhp/400rwtq unlocked. based on what we were seeing pulling fuel and adding timing at the lower boost level i would say there is an easy 15hp on top of that once tuned but we didn't want to have it on the edge of being out of fuel.
seems like great numbers for only 8.5psi, this seems like a very safe setting. there is a ton more in it when/if the owner wants more down the road. a cam would do wonders. right now just some injectors and we could turn it up to 350rwhp. put a cam in there or some race gas and lots more boost and 400+rwhp seems likely. turbo is conservatively rated at 585fwhp.
here is a chart showing the 8.5psi unlocked vs locked.
