dyno run #2

[bimmertech]

i dyno'd my car about a month ago after my h/c swap and put down 268hp/290tq. combo was afr 165's, tfs1 cam, 70mm t/b, 76mm c&l setup, mac shorties, o/r x-pipe, stock cat back, afpr, gasket matched cobra intake.

needless to say i was displeased, so i bought a msd distributer, edel catback, 255lph fuel pump, and tuned a little better with fuel pressure and timing. to the result of 295hp/320tq on the stock cobra ecm. a/f ratio was at 13.5:1.

sorry, no scanner just a pic.
View attachment 499808

 

[legalize420]

nice

 

[RIO5.0]

295 is more like it.... I'm 262 with Thumpers...so something was wack for running AFR's...

 

[legalize420]

i cant wait till i get my tune.

 

[bimmertech]

thanks for the the place where i dyno'd will do an sct dyno tune for 475. i'm prolly gonna do it.

 

[Grn92LX]

You need to add fuel. That is too lean. Remember, you're gonna be leaner on the street due to the weak load a dynojet puts on the car vs a real load the street puts on the car. Also, how much timing did you run? You can also see the dyno curves starting to get a little jagged after 5,000 rpm. That can be a valve spring issue seeing how the smoothing is on 3 (smoothing makes the curves look cleaner)

I'd invest in a tuning device and a wideband and do my own tuning. This way you can make changes on the fly or as you add more mods. I was out last night doing some datalog pulls with my wideband and im a bit rich up top.

 

[legalize420]

im going to a place by me mustang specialties. they did the machine work on my heads and they turned out amazing. im sure i will spend between 5-600. im also getting a new clutch and i just ordered the steeda quadrant clutch cable kit. that just puts my gears back a little bit but i need to get my cam and comp to become better friend, they kinda get along. im still getting hot start surging, low rmp bucking, and hanging idle. with my idle a 900 i can sur the accesories. lets see how it goes. probally next week.

 

[legalize420]

and im running rich

 

[bimmertech]

You need to add fuel. That is too lean. Remember, you're gonna be leaner on the street due to the weak load a dynojet puts on the car vs a real load the street puts on the car. Also, how much timing did you run? You can also see the dyno curves starting to get a little jagged after 5,000 rpm. That can be a valve spring issue seeing how the smoothing is on 3 (smoothing makes the curves look cleaner)

I'd invest in a tuning device and a wideband and do my own tuning. This way you can make changes on the fly or as you add more mods. I was out last night doing some datalog pulls with my wideband and im a bit rich up top.

yeah i am lean, the last run we added a twist of fuel pressure and it really worked. timing is at 14, i am able to run 87 with that. i am really not into the whole self tune anymore, i had lt1 edit on my last car and while fun, i just don't enjoy that stuff anymore.