trying this dyno thing again
10-03-2009, 06:22 AM
#1
2nd Gear Member
Thread Starter
Join Date: Oct 2008
Location: massachussets
Posts: 467
trying this dyno thing again
well i'm taking my car to the dyno again to hopefully get my car tuned properly this time. those of u that read any of my last posts about getting a supposed dyno tune know that it was a complete joke. so ever since i've put bullet stage 2 cams on i have been runnin stock tune with a/f touching 10 throught most of the rpm range. hey rich can't harm anything so whatever. going to performance dyno in concord, nh today. hopefully i'll see some good results. with canned sct tune i put out 268hp/293rwt. hopefully tuned right i'll see better numbers
10-03-2009, 07:43 PM
#4
2nd Gear Member
Thread Starter
Join Date: Oct 2008
Location: massachussets
Posts: 467
just got back form the dyno. numbers didn't change that much, but the a/f graph is 100% better. he worked on the car for like 3 hrs until he finally got the a/f and idle right. Great guy really knows what he's talking about (pete at performance dyno concord, nh) there was a 03 cobra there right before me. put down 803 hp. damn thing was insane!!!!
old graph:
new graph:
hp/tq:
old graph:
new graph:
hp/tq:
10-03-2009, 08:59 PM
#5
6th Gear Member
Join Date: Jan 2007
Location: MI
Posts: 5,884
Nice! So, they got all the bugs worked out?
BTW, do if your ported NPI heads are supposed to outflow stock PI heads? Reason i ask is because i'm trying to figure out what my car may put down with these cams.
It appears except for the different heads, and UDP's, that we basically have the same mods.
I know dynos very and what not, but i'm just curious how you're heads flow compared to mine.
Thanks.
BTW, do if your ported NPI heads are supposed to outflow stock PI heads? Reason i ask is because i'm trying to figure out what my car may put down with these cams.
It appears except for the different heads, and UDP's, that we basically have the same mods.
I know dynos very and what not, but i'm just curious how you're heads flow compared to mine.
Thanks.
10-03-2009, 09:14 PM
#6
2nd Gear Member
Thread Starter
Join Date: Oct 2008
Location: massachussets
Posts: 467
Nice! So, they got all the bugs worked out?
BTW, do if your ported NPI heads are supposed to outflow stock PI heads? Reason i ask is because i'm trying to figure out what my car may put down with these cams.
It appears except for the different heads, and UDP's, that we basically have the same mods.
I know dynos very and what not, but i'm just curious how you're heads flow compared to mine.
Thanks.
BTW, do if your ported NPI heads are supposed to outflow stock PI heads? Reason i ask is because i'm trying to figure out what my car may put down with these cams.
It appears except for the different heads, and UDP's, that we basically have the same mods.
I know dynos very and what not, but i'm just curious how you're heads flow compared to mine.
Thanks.
10-03-2009, 09:19 PM
#7
5th Gear Member
Join Date: Aug 2007
Location:
Posts: 3,189
Nice! So, they got all the bugs worked out?
BTW, do if your ported NPI heads are supposed to outflow stock PI heads? Reason i ask is because i'm trying to figure out what my car may put down with these cams.
It appears except for the different heads, and UDP's, that we basically have the same mods.
I know dynos very and what not, but i'm just curious how you're heads flow compared to mine.
Thanks.
BTW, do if your ported NPI heads are supposed to outflow stock PI heads? Reason i ask is because i'm trying to figure out what my car may put down with these cams.
It appears except for the different heads, and UDP's, that we basically have the same mods.
I know dynos very and what not, but i'm just curious how you're heads flow compared to mine.
Thanks.
Last edited by MU71L4710N; 10-03-2009 at 09:23 PM.
10-03-2009, 09:29 PM
#8
6th Gear Member
Join Date: Jan 2007
Location: MI
Posts: 5,884
ported npi heads do outflow pi heads. mine don't because i very mildly gasket matched/polished the intake /exhaust ports and unshrouded the intake valve alittle. didn't flow bench em after so i odn't kow exact numbers. what cams did u end up buying the stage 2's?? u'll love em. the guy that tuned my car was flabergasted that my gt put out as much power as it did lol. i blushed alittle. i'm guessing between 270-310 on ur application
That's cool that your tuner was impressed. Did he happen to mention how these cams performed and sounded compared to others?
10-03-2009, 09:31 PM
#9
6th Gear Member
Join Date: Jan 2007
Location: MI
Posts: 5,884
10-03-2009, 09:39 PM
#10
3rd Gear Member
Join Date: Jan 2009
Location: Florida
Posts: 570
ported npi heads do outflow pi heads. mine don't because i very mildly gasket matched/polished the intake /exhaust ports and unshrouded the intake valve alittle. didn't flow bench em after so i odn't kow exact numbers. what cams did u end up buying the stage 2's?? u'll love em. the guy that tuned my car was flabergasted that my gt put out as much power as it did lol. i blushed alittle. i'm guessing between 270-310 on ur application
Good power on that NPI finally. Did you get a good valve job done to those NPI heads? Stock they only have a single angle valve job and will gain about 15-20CFM in the midlift from a good 3 angle job.