Journal of APS ST install on G35 Coupe
UPDATE:
Thanks for the kind words everyone.
The engine is back in the car, almost everything is wired up, fluids added.
Engine will be cranked tomorrow and dynoed. Unfortunately, I will not be present for this, but Ted from Scott Performance will call me and let me know what the numbers are. I will prolly pick up the dyno sheets on Thursday or Friday.
No pics of the engine bay. Saving that for future shows and *crosses finger* magazine coverage
Thanks for the kind words everyone.
The engine is back in the car, almost everything is wired up, fluids added.
Engine will be cranked tomorrow and dynoed. Unfortunately, I will not be present for this, but Ted from Scott Performance will call me and let me know what the numbers are. I will prolly pick up the dyno sheets on Thursday or Friday.
No pics of the engine bay. Saving that for future shows and *crosses finger* magazine coverage
Man Vinh... you have WAY too much spare money laying around. 
The good thing is... you have amazing taste and style. Your G is one of the nicest I have ever seen. Keep up the good work!!
The good thing is... you have amazing taste and style. Your G is one of the nicest I have ever seen. Keep up the good work!!
well, my installer just called with some preliminary numbers.
no surprise with the drop in boost. for those not aware, it appears that the reducer used by APS to mate the downpipe to a "stock sized" exhaust is causing high back pressure, resulting in a drop in boost from 4500 rpm - redline.
APS claims it is designed to control boost to allow it to peak at mid-RPM and taper off at redline. this is done at the cost of performance.
if you utilize a freeer flowing exhaust, (3" or so), the boost will hold steady 'til redline and you can get bigger numbers. this was evident when Ted pulled off the reducer and ran the car. boost dropped maybe 1 lb, but that's about it.
he said with my set-up (aftermarket cams), he could prolly tweak out 350-355 rWHP with the restriction. if i got it uncorked and went with a freer flowing exhaust, he could prolly get A LOT more (i swore i heard 430 rWHP). HOPEFULLY, i will get some numbers posted tomorrow.
ted from scott performance will tune it with and without the reducer for comparison.
no surprise with the drop in boost. for those not aware, it appears that the reducer used by APS to mate the downpipe to a "stock sized" exhaust is causing high back pressure, resulting in a drop in boost from 4500 rpm - redline.
APS claims it is designed to control boost to allow it to peak at mid-RPM and taper off at redline. this is done at the cost of performance.
if you utilize a freeer flowing exhaust, (3" or so), the boost will hold steady 'til redline and you can get bigger numbers. this was evident when Ted pulled off the reducer and ran the car. boost dropped maybe 1 lb, but that's about it.
he said with my set-up (aftermarket cams), he could prolly tweak out 350-355 rWHP with the restriction. if i got it uncorked and went with a freer flowing exhaust, he could prolly get A LOT more (i swore i heard 430 rWHP). HOPEFULLY, i will get some numbers posted tomorrow.
ted from scott performance will tune it with and without the reducer for comparison.
Originally Posted by drsifu
well, my installer just called with some preliminary numbers.
no surprise with the drop in boost. for those not aware, it appears that the reducer used by APS to mate the downpipe to a "stock sized" exhaust is causing high back pressure, resulting in a drop in boost from 4500 rpm - redline.
APS claims it is designed to control boost to allow it to peak at mid-RPM and taper off at redline. this is done at the cost of performance.
if you utilize a freeer flowing exhaust, (3" or so), the boost will hold steady 'til redline and you can get bigger numbers. this was evident when Ted pulled off the reducer and ran the car. boost dropped maybe 1 lb, but that's about it.
he said with my set-up (aftermarket cams), he could prolly tweak out 350-355 rWHP with the restriction. if i got it uncorked and went with a freer flowing exhaust, he could prolly get A LOT more (i swore i heard 430 rWHP). HOPEFULLY, i will get some numbers posted tomorrow.
ted from scott performance will tune it with and without the reducer for comparison.
no surprise with the drop in boost. for those not aware, it appears that the reducer used by APS to mate the downpipe to a "stock sized" exhaust is causing high back pressure, resulting in a drop in boost from 4500 rpm - redline.
APS claims it is designed to control boost to allow it to peak at mid-RPM and taper off at redline. this is done at the cost of performance.
if you utilize a freeer flowing exhaust, (3" or so), the boost will hold steady 'til redline and you can get bigger numbers. this was evident when Ted pulled off the reducer and ran the car. boost dropped maybe 1 lb, but that's about it.
he said with my set-up (aftermarket cams), he could prolly tweak out 350-355 rWHP with the restriction. if i got it uncorked and went with a freer flowing exhaust, he could prolly get A LOT more (i swore i heard 430 rWHP). HOPEFULLY, i will get some numbers posted tomorrow.
ted from scott performance will tune it with and without the reducer for comparison.
Preliminary dyno results are posted on my website
www.yellowg35.com/turbodyno.html
i'll leave it up to the forum to interpret the data as they which. i was told the boost has been stabilized going to redline. if I want more HP/TQ, I will need to upgrade my exhaust.
www.yellowg35.com/turbodyno.html
i'll leave it up to the forum to interpret the data as they which. i was told the boost has been stabilized going to redline. if I want more HP/TQ, I will need to upgrade my exhaust.
yeah i read the fine print, i read that.
were your tires pretty bald? the only time ive ever seen tires slip on a dyno was a car with over 1000 whp. dont see it too often on cars less than 400.
were your tires pretty bald? the only time ive ever seen tires slip on a dyno was a car with over 1000 whp. dont see it too often on cars less than 400.
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