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Thread: S4 cams dyno results (page 2)

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Posts: 21-29 of 29
2008-05-02 20:02:33
sweet... can't wait to see how my bc stg. 2's do with turbo and 10psi
2008-05-02 21:28:08
2008-05-02 22:54:24
not bad at all, they tend to gain more with more boost from what ive seen, say if you did your original dyno at 12psi and did this current dyno at 12psi i bet you would have seen another 10 additional hp and tq over the one without cams, thats just the way they work. 10psi is really not much but those gains are still nice though, Get a 4 bar program and turn the boost up and watch the power gain tremendously
2008-05-02 23:25:14
is it me or are the air fuel ratio numbers really lean at looks like 13-14
2008-05-02 23:28:00
Thats the red line. There we were playing with the fuelpressure. And yes it was lean (about 13,5:1).
2008-05-02 23:39:44
whew i donno that is awful lean, i wouldnt take the air fuel ratio at WOT any higher than 12:1 most tuning shops ive dealt with dont go above 11.8, and more lean isnt going to make more power up top becuase your optimal shift points are earlier in the powerband and up top it drops off more

after takng more looks at the powerband and the air fuel ratios, i think more solid air fuel ratios tuning in the 4,000-5,500rpm range, will net you more whp

BUT WOT shouldnt be any higher than 11.8-12:1 otherwise you are taking a chance of having it grenade
2008-05-03 08:41:07
No worries, thats what the guy also told me, so we turned it back to the blue line (2nd from above with a 12:1 ratio).

Indeed I could gain some more with finetuning, but I'm allready planning on going bigger so I dont realy want to spend more money on this set for dyno'ing, safc etc.
2008-05-03 15:47:08
what are you planning on upgrading to?
2008-05-03 22:56:15
T28/GT28R/GT28RS something... Looking for about 280-300 whp.
GTI-R T28, Z32 maf, 550cc icw the S4 should do the job and pretty cheap right now with the dollar/euro ratio
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