Maxima Forums - View Single Post - Full DEK swap Dyno before Cattman headers

*98SEBlackMax* · 12-17-2007, 09:44 PM

Headers are in and the car is up and running.

No exhaust leaks and everything seems great so far.

Two things off the bat -

These do lean out the exhaust a bit, well on this car at least. I don't need a A/F gauge to tell. Usually the cold start exhaust odor on this car is noxious with an extreme amount of fuel in the exhaust (DEK injectors with DE fuel pressure reg). It's been this way for years now matter how many things I've messed with. Now there is very little fuel smell even on the cold start.

2nd the exhaust sound... SMOOOOTH... Gotta like this setup for it's sound. Not 100% of what I was expecting but a great improvement none the less.

Once the snow is clear on these damn roads the re-dyno will go down.

Anyone want to place bets on what the gains are ?

12-17-2007, 09:44 PM	#15
98SEBlackMax Supporting Maxima.org Member Join Date: May 2002 Location: Spencer, MA iTrader: (9) Posts: 1,241	Headers are in and the car is up and running. No exhaust leaks and everything seems great so far. Two things off the bat - These do lean out the exhaust a bit, well on this car at least. I don't need a A/F gauge to tell. Usually the cold start exhaust odor on this car is noxious with an extreme amount of fuel in the exhaust (DEK injectors with DE fuel pressure reg). It's been this way for years now matter how many things I've messed with. Now there is very little fuel smell even on the cold start. 2nd the exhaust sound... SMOOOOTH... Gotta like this setup for it's sound. Not 100% of what I was expecting but a great improvement none the less. Once the snow is clear on these damn roads the re-dyno will go down. Anyone want to place bets on what the gains are ?