Does this seem low?
Does this seem low? Alright well took my car to the dyno after my buddy cleaned up my AFR on the street. my injectors were at 102-104% duty cycle according to my buddy that was tuning my car.
Car:
2002 Camaro Z28 6 speed
Mods:
lid w/ cut bottom
ported stock throttle body
futral cam 223/221 587/587 114ls
ebay headers
3" Y to 4" back to a 4" flowmaster
steel DS
Car:
2002 Camaro Z28 6 speed
Mods:
lid w/ cut bottom
ported stock throttle body
futral cam 223/221 587/587 114ls
ebay headers
3" Y to 4" back to a 4" flowmaster
steel DS
Alot of things to figure here..The steel DS...The Rims you used on the Dyno...The temp outside..humidity..elvation etc...Mustang dyno etc...
With that said..Not too bad..But not great either..get rid of the flowmaster..get some cheap slp's at least or borlas..and a good cutout..qtp electric...It just makes life so much easier.
With that said..Not too bad..But not great either..get rid of the flowmaster..get some cheap slp's at least or borlas..and a good cutout..qtp electric...It just makes life so much easier.
Joined: Aug 2007
Posts: 24,241
Likes: 89
From: Turnin' Wrenches Infractions: 005
OP are you running a 4 inch Flowmaster or a 4 inch pipe necked down and going into a flowmaster catback? Anyone who just blatantly say "OOOO IT MUST BE THE FLOWMASTER" without seeing the 4 inch wrote in front of it is obviously an idiot.
i had a flowmaster on my 2000 procharged t/a then i added 1 7/8 american racing headers no cats and a 3" cutout, Rwhp before was 402, after header and cutout 468rwhp. flowmasters suck.
Trending Topics
The flowmaster may not be where all the power is at but there is definately some to be gained there. They are terrible mufflers as far as flow goes. I have seen them lose power to a stock cat back. I don't see why you are running out of injector though. Have you checked your fuel pump or fuel filter recently?
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo no i havent checked anything fuel related. i should probably check that since it doesnt seem like this car was maintaned before i got it. 130xxx miles and still had the stock plugs/wires
its a 4" race series flowmaster. theres pretty much nothing in it. before the cam it made the same power as my buddies car with true duals spintech setup. we both made around 320-330hp to the wheels.
BTW, I would get new wires and plugs, for safety and performance plus change your fuel filter..peace of mind for cheap..
Joined: Aug 2007
Posts: 24,241
Likes: 89
From: Turnin' Wrenches Infractions: 005
If you can't list what kind of flowmaster it was, then your argument has no validation.
Again, we are specifically talking about a 4 inch in/out single chamber. Did you have this? Likely not so see ya 
Again, flowmaster inc. makes about 500 different specific mufflers. Well maybe not 500 but its a shitload. If we aren't talking specifics then we have our thumb up our *** here gentlemen. HERE is what me and the OP is running. One freakin baffle thats it.
anyone else notice the cam peaked at 5700rpm? not the muffler...get off the flowmaster hate wagon, please.
the car has a serious problem NOT related to the muffler with a curve like that.
the car has a serious problem NOT related to the muffler with a curve like that.
From the looks of your dyno graph, your injectors were keeping up just fine. While you shouldn't run them at that high of a DC, they weren't keeping you from making more power.
Are the numbers "UNCORRECTED"?
Are the numbers "UNCORRECTED"?
