Please critique my dyno run

[sleepless]

Ported Eaton with 2.8 pulley, Bassani X-pipe w/ cats, Steeda cat back, Steeda CAI.

Here is the graph:

Here is some additional data: http://spreadsheets.google.com/pub?key=pNx6XC0mzTBKHYfTGZSrZNA

 

[RAZRS EDGE]

Average #'s. A hair too lean @ 3500rpm's and way too lean @ 5700+rpms. Who tuned it? What gas? Was the A/F read through the tailpipes or wideband?

According to your attachment file, you are pegging your MAF voltage at about 6k rpms and up. Probably why you are running lean. You need to look into a DiabloSport Mafia.

-Graycen

 

[Sniperdog]

not enough








j/k

 

[TrickStang37]

ya, too lean but otherwise ok. what octane/timing?

 

[Ex President]

Good #'s! Like they said though, it's goin lean on the top end there.


Is it me or is his boost #'s all over the place?

Belt slip?

 

[sleepless]

92 octane gas. A/F readings are via a wideband sensor. Timing, MAF voltage, air intake temps are in the file link: http://spreadsheets.google.com/pub?key=pNx6XC0mzTBKHYfTGZSrZNA.

It is a mail order tune. I think it is time for a custom tune.

I noticed that the MAF hits 5V at around 6000RPM and wondered if that was normal.

I haven't read of anyone needing a MAFia or lager MAF with a similar setup to mine. Is it possible my MAF is bad?

What do you think of the torque below 4000RPM?

 

[TrickStang37]

I needed a MAFia and im only making 440rwhp.

 

[TrickStang37]

didnt look at the graph before, the timing is pretty aggressive for that octane i see.

 

[PWORLDSTANG]

Looks like the tune could use a little work. Definitely get on the dyno and get a dyno tune if that's an option for you. I think you'd pick up a few extra HP with a dyno tune.

Overall, IMHO, not bad until you get at about 5700RPM. That's wher I'd start to worry.

But, the tune can definitely use some work.

 

[Romans8:28]

What do you think of the torque below 4000RPM?

Looks low to me........

Mine put out 489 @3300 rpms

Is your belt slipping just a bit?

 

[jm@ReischePerf]

I haven't read of anyone needing a MAFia or lager MAF with a similar setup to mine. Is it possible my MAF is bad?

No MAF is just pegged, not surprising at all on a port/2.8. Might have some slip but the hp#s look decent. I wouldn't drive this car WOT especially above 4500 until you get a MAF fix and retune.

 

[slo-poc]

a/f need work....imho.......but not bad....

 

[Posi]

I say send all your info over to Rick at Amazon Tuning Solutions and he'll set you up probably in one try with the correct tune for your car. Plus you're a lifetime customer after the initial hit for whenever you change anything on your car! Now that's service.

 

[racebronco2]

My car also pegged my maf with a similar set-up at about 5500 rpms.

 

[SicStang03]

get a MAFia, 60lbs, and a dyno tune...

 

[TrickStang37]

i doubt you need the injectors. probably a BAP tho.

 

[HISSMAN]

Get a custom tune. Who did you get the mail order tune from? They should make adjustments for free if they are a good dealer/tuner.

-Jeff

 

[Posi]

You need to do what HISSMAN says first because they should adjust it for you. Did you send them the info from the dyno? Way to use a little common sense HISSMAN.

 

[HISSMAN]

Thank ya.

 

[DarkSnake]

Ported Eaton with 2.8 pulley, Bassani X-pipe w/ cats, Steeda cat back, Steeda CAI.

Here is the graph:

Here is some additional data: http://spreadsheets.google.com/pub?key=pNx6XC0mzTBKHYfTGZSrZNA

Your A/F is lean, it should be almost flat after tip in, it also looks like you might have some belt slip, or something else that is causing your bost to go up and down so much. Boost on a pullied eaton should be flat accross the middle rpms and start to drop at higher rpms. Your boost goes up and down, up and down. Get a Reichard pulley, or a Reichard tensioner to correct this problem.

Good luck>