RSC 172
Hello all - recently I added new cams to my May 02 build 172. Before fitting new cams I did base power runs and maxed out at 100 kw ATW & approx 160 Nm. Now here's the thing, 24 months prior I was consistently turning out 110 kw ATW and approx 180 Nm. So somewhere in those 24 months I dropped some power. Fitting the cams has added back in the 'lost' 10 kw but only 50% of torque...so back to 110kw & 170 Nm ATW.
Car has 2.5" catback, std 172 cat, wideband 02 sensor, std air box and panel filter. Custom mapping vai Henk. Nothing unusual on the logs both before fitting cams and after. Parameters all look fine. Car drives fine and feels strong. Cam PA's show extened pwr top end well into 7k's and good top end torque.
Just missing the 10kw before fitting the cams it seems. I should be seeing around 120kw / 180 Nm with the cams.
Engine doesn't use any oil and the oil stays remarkably clean for a long time after oil changes. Car is very well maintained.
Just wondering if people could offer advice as to what would be the 3-4 most common reasons to lose power and how to investigate? I know there are some very skilled and knowledgable people on this forum.
I haven't stuck me head up the exhaust as yet but of note she 'puffs' a little on idle..then again always has. No 'noises / rattles' from exhaust.
Cheers
Car has 2.5" catback, std 172 cat, wideband 02 sensor, std air box and panel filter. Custom mapping vai Henk. Nothing unusual on the logs both before fitting cams and after. Parameters all look fine. Car drives fine and feels strong. Cam PA's show extened pwr top end well into 7k's and good top end torque.
Just missing the 10kw before fitting the cams it seems. I should be seeing around 120kw / 180 Nm with the cams.
Engine doesn't use any oil and the oil stays remarkably clean for a long time after oil changes. Car is very well maintained.
Just wondering if people could offer advice as to what would be the 3-4 most common reasons to lose power and how to investigate? I know there are some very skilled and knowledgable people on this forum.
I haven't stuck me head up the exhaust as yet but of note she 'puffs' a little on idle..then again always has. No 'noises / rattles' from exhaust.
Cheers
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