Scott 89t2

ok it's offical stock gauges suck.

a few weeks ago I proved the water temp gauge sucks (S5). I hit 216F on an aftermarket one. and the stock gauge didn't move between 185 and 216!

but now today I installed my S-afc. it's RPM readings will be much more acurate then the tach. well my stock tach is 300rpm too low at 3000rpm. and 400rpm too low higher up. So I've been shifting to dam early all this time!

TKE

If your tach is reading to low wouldnt that mean you are shifting to early?

Liquid Anarchy

iTrader: (2)

... that's what he said.

Kanaida

Poor Scott... Sheesh, now I'm excited about getting my acf! I wanna see if my tach is messed up too! If it is, I'm gonna get me one of those HUGE 5 inch diameter tach's with the flashlight on the side that acts like a shift light! YEAH!!! Mustang drivers will think I'm the coolest!

-Kanaida

Piranha

hmmmmmmmmm..... thats strange. I had my Turbo Timer (one of the fancy HKS ones) hooked up to the tach signal from my ECU, and at about 7000 it is about 200-300 off also. I figured it was the turbo timer... now... I don't know.

Barwick

if your tach is low, you're shifting too late.

dre_2ooo

The stock guage says "normal" from 174*F-249*F .

Needlesss to say it moves to 'H' at 250+..

Piranha

its ok, she can take it!

Scott 89t2

no, when i'm at 4000rpm on the afc. the stock tach says 3600.

so when I shift when the stock tach says 7000, it's only at 6600.

so I shift too early.

Felix Wankel

Wouldn't it (the engine) be at 7400?

Piranha

it depends on which gauge is accurate. He is saying the SAFC is.

Roy James

Felix is right... if you are really at 4K when your stock tach says 3600, then.. you are at 7400 when your stock says 7000, shifting late.. sucka

Scott 89t2

opps it was the other way around LOL... when the stock tach said 4000. the afc was at 3600.

so early I had one part right LOL

Piranha

yeah well.... dangit.

Felix Wankel

Stop confusing me! Its hard enough converting kg, cm, kph, and *C in my head

Piranha

what about.... kiloPascals?