FASTEDDIE Z

iTrader: (4)

I had my car dyno tuned today ( Mustang Dyno) . Apparently it was running lean with the M.O tune ( mid to upper 14's A/F)
Its a 98 Z28 A4 , stock engine & manifolds,
magnaflow C.B (cats delete) ,SLP lid
373 gears ,with a Yank ss4000 stall .
96K on car .

T/C unlocked
RWHP : 303
RWTQ : 302
Avg A/F : 13.2

Im not really concerned with the #'s ,it was more for the tuning than the #'s.
But ,,2 questions .
#1 . does my A/F still look too lean ?
#2. Is the low torque # because of the A4 and 4000 rpm stall ?

Pwebbz28

iTrader: (31)

Numbers look just fine to me!! Put some sticky tires on and go to the track!!

MauriSSio

what were the numbers with the M.O tune??

BLK02WS6

iTrader: (2)

13.2 is on the lean side for my liking... but some tuners go there. Personally, I have found they make just as much or more power at 12.7 or 12.8, so why go so lean...

The numbers are as expected with an A4 and that converter...

MikeG

iTrader: (33)

For an unlocked converter those are great numbers!

FASTEDDIE Z

iTrader: (4)

Dont know . It went way up into the 14's so my tuner bailed on the base line dyno . He didnt want to chance it and damage the engine .
Now I still have to get the new torque converter lock up figured out and a new set of motor mounts .

JasonSS2000

iTrader: (1)

Gotta agree w/the tuner. WOT in the 14's is detonation waiting to damage #7. Get a tune and get to the track!!!

Slowhawk

iTrader: (12)

The #'s are fine.The A/F is too lean for an unlocked A4 car.When you lock the car the load goes up and that 13.2-1 probly goes to 13.8-1 A/F.I tune A4's tp 12.2-1 to 12.5-1 locked.

FASTEDDIE Z

iTrader: (4)

Thank you everybody . That number is the average on the printout (13.2). It also showed as high as 18 once . (Rev limiter at 6300rpm) so that was part of the average I guess . Ill have to give my tuner a call .