Originally Posted by BrianV

Dude calm down, he's just looking for a rough estimation in his head, I'm sure he'll disclaim that his calculation is purely speculative. There's a degree of error in every estimation. He doesn't need to pony up $60+ for a dyno if he feels confident with an estimation. There's really no point to dyno a car unless you're looking to tune A/F, timing, or other variables. The only reason would be for pure bragging rights which in turn really do nothing for you, it doesn't make your car any faster, it doesn't do anything for you, and you'll never know how much each mod contributed to the net gain.

I think what he asked is a fair question, and I think the numbers that are being spit out are within a reasonable range. Even if he gets a real dyno, he'll be measuring WHP and will be using a calculation that has an unknown degree of error to create a crank HP number. It's a flawed system to start with, what's the point in paying money to conclude a flawed system. It's clear he wants a number he can justify as crank HP so either way he's screwed. Don't act like you're some ultimate 'god' on the subject and that his value is completely worthless, it has SOME value and SOME merit, but it's certainly far from conclusive. The last sentence in your statement is the most constructive statement here. He won't be lying by stating he's making 275-285 HP as long as he and whoever he tells is aware of the calculations and estimations involved.

Originally Posted by calejohnson

How many of us go around smug with the knowledge that we pack a XXX caliber pistol in our pants if we're not at least mildly interested in showing it off? (Do you get my drift? )

My point is that at some level this whole modding thing is about showing off or measuring up. If you're going to show off or measure up, why not get the most accurate measurement available?

Originally Posted by BrianV

If the reason you mods is to show off your HP gains over the factory condition then you bought the wrong car. You won't find many cars that respond less to mods than the G35; I guess it's a testament to Nissan.

I do understand what you're saying, but finding a dyno and paying for it in my eyes isn't worth knowing with more certainty how much power you're making until you get into more serious mods where the range is larger or when you get into tuning. That said, even people who do have dyno charts are constantly being called out for the valditity of the dyno place, the weather conditions, etc. At the end of the day, the only thing that means anything is, "Are you happy with your modifications?"

Originally Posted by SixFive

7% increase is HUGE. 35 ponies for 1000 bucks that's cheap. Don't compare everything to a turbo which can be cranked up for gobs of power and gobs of new issues. 28 bucks per pony boys. Dont run out and buy a 1000 catback and you'll be much happier and wealthier. It's not cheap but neither is a faster car.