1SLO6

iTrader: (8)

who tunes a speed density style car in so. cal????? I have a 93 Camaro that needs a re-tune....after 6 speed swap and long tubes.... running a little rich.... any info will be helpful.

wicked z28

iTrader: (9)

Not sure but try cms in corona

Ryne @ CMS

iTrader: (10)

i cant tune the 93's because i dont have a chip burner

1SLO6

iTrader: (8)

bump.....

MSS91Z28

iTrader: (3)

PM Kevin91Z, he is located in Orange.

Tunes thirdgens but can tune an sd lt1..

Raptor_WS6

iTrader: (23)

try std

Sommer86

iTrader: (46)

Hey Ryne, you can do speed density tunes period?? SWEET!! Any draw backs vs. a dyno tune?

Raptor_WS6

iTrader: (23)

hmm, mike, an SD tune is just a MAFless tune, you take out the maf

they both can be done on the dyno

BigDaddyBry

iTrader: (15)

Had some, don't like them very much.

Sommer86

iTrader: (46)

then whats the tune thats done while you're driving??

Raptor_WS6

iTrader: (23)

umm, a street tune

Ryne @ CMS

iTrader: (10)

yeah i can do speed density tunes on lsx platform vehicles. why do you need it though? are you running a large camshaft, or a turbo?

Sommer86

iTrader: (46)

aaahhh... I didn't know what they were tunes for. I had just heard that street tunes were more accurate to street conditions. I didn't know you needed a big cam or turbo.

Thanks!

ThirdGenLS1

iTrader: (11)

you dont need a large cam or turbo, its a general the fact that they run better with a sd tune. Sd is just another way to calculate air charge coming into the engine, doesnt necessarly mean its better or worse then a maf just different ways of coming to the same result.

02NBMWS6

iTrader: (22)

for a bigged cammed car, a SD tune is better. for a turbo car, a SD tune is better. for a stock car, a MAF tune is better.

Yes, they are both just different ways of calculation, but there are advantages to be had from a SD tune on particular types of setups. Thats something that i would consider "better"

sommer86 - Ryne tunes the car on the dyno and the street, youre right, sometime the car's dont act quite the same on the dyno as they do the street because of the differences in load. Ryne's particular type of dyno really helps to overcome this, but he still takes the car out on the street to verify. Once you get a big cam, or turbo then you will want a speed density tune.

Ryne @ CMS

iTrader: (10)

never said it needed, but otherwise its overkill, regardless i make changes to the ve table anyway then reengage the maf

ThirdGenLS1

iTrader: (11)

wasn't correcting you ryan just giving him information

Ryne @ CMS

iTrader: (10)

sorry i am in a little touching mood, lol my bad

hlaalu

iTrader: (3)

whats the benefit to not having a maf?

Ryne @ CMS

iTrader: (10)

well on more radical combinations like lets say big cam cars, you eliminate the reverison going out past the maf sensor, coming from the motor do to the cams overlap. a probably tune sd car will fuel exactly to what motor needs. but there one issue is obviously smog (you need the maf to pass smog) which might a non issue anyways with a large cam car. and it cant make as much adjusts itself, as the maf car can. generally i tell customers if the car is mild in performance parts, just run it with the maf, if you have a more radical combination then go speed density