it is true that an auto will dyno 10-15 less than a manual and they tested a manual in my magazine

i have an auto with 273's

 

yeah sorry if if that was confusing. all m6s have 3.42s

 

I hit 300rwhp in my 98 and i have an auto so.......

 

Stock '98 with ~80K+ miles on the clock put down 300hp to the wheels on Horsepower TV today.

 

i thought 98s had bigger injectors

 

I have a 98 and it put down (316.2 rwhp) and (326.7 rwtq) with just a K&N filter.

 

What did it MPH in the 1/4????

 

damn there are some serious numbers being posted

nice

 

well, by the time I actually had it to the track I had exhaust on it... just a catback but hey, it all adds up. It was good for 13.42 @ 105.7 Which was coincidentally the first time I had ever BEEN to the track.

2nd run was 13.23 @ 105.5

and 3rd run of the day I went 13.09 @ 105.8

I eventually got it down to a 12.88 @ 106.6 with just a K&N and cat-back.

 

damn 12.8 with a filter and catback. man i ran 13.6 with those mods

awesome times, got to dyno my car

 

My 2002 M6 dynoed 299.7 hp/317.5 ft lbs with a SLP lid and a K&N (the K&N is worth less than 1 hp from what I've seen). That is the lowest I've ever seen a 2002 M6 dyno. It had 5,500 miles on it at the time. My only drag strip pass was not a good test (1.09 light, 2.6 60ft and nearly stalled it, launching at 900 rpm and a 14.04@102.5). I'm sure the car would go faster, but that was on a 90 degree day (before I'd mailed the first car payment on it) and I was going real easy on it.

Of course, by the 4th dyno pull, my hp was down into the mid 280 hp range. I suspect the car was not cooling properly on the dyno and that may have been part of the problem.

 

I have a 98 M6
I pulled 318/328 with a Dynomouth and lid (paper filter).
It was one pull, very hot day.

Concerning some previous comments:
Lower gears cause lower dynos. Not vice versa.
Autos dyno lower because of more parasitic loss, but tend to be faster at the track due to consisent shifting. M6 with traction has the edge, but only with a very good driver.
The 98 cam is better, the later cars got the truck cam to detune them a little. The exhaust, intake, and other revisions called for a smaller cam to keep power in check.
Later cars are said to dyno ~10 higher, this is what I have seen myself, but there are factory freaks both ways.
I have seen 2 dynos that were later cars with my exact same mods and they were exacty 10 rwhp higher.
Dave

 

Are you sure about this???

 

my 99 dynoed 279 rwhp and 281 rwhp on the same session. Best mph was 101. My 01 has not been dynoed but trapped 109.46 mph on its only run down the track. 99 was an auto and the 01 is a manual.

 

I know the '02's have the Z06 clutch (not sure on the 01's) and there is no egr on my 2002 and I bought it new from the dealer and did not remove it myself. I'm very sure about both of those.