rjkZ28

hey guys just installed ms4 w/ yank ss400. the car has the basic bolt ons except for intake/tb. im getting the car tuned april 7th and debating on how the car should be tuned either speed density or with the maf. im curious as to what other ms4 users used to tune their car.

lemons12

iTrader: (71)

w/ ma.f..

rjkZ28

any others?

bww3588

iTrader: (49)

probably get better results in the tuning PCM diagnostics section.......

camaro_ss_97

iTrader: (28)

got one but not tuned it yet

dazman

i sent my computer off and let texas speed do it. ran great

Camaro396

iTrader: (14)

The ran great, not runs great thing worrys me..what happend lol?

Camaro396

iTrader: (14)

I am also a member of the not yet tuned club.

LSWNDR

i'm new to this site, but my car is getting tuned for speed density friday because the few people i've talked to said it makes a world of difference

dazman

HAHAHHAHAHA SO IT DID!!! yeah, it did run good, till a rod let go and blew sky *** high. now i have a tsp 408 with giant cam


mike

yyz28

iTrader: (3)

I've got the MS4 cam, dyno tuned by TSP - Great power, great daily driver even with MS4 and 4000 stall - MAF still in place.

JoeyGC5

iTrader: (24)

When I had that cam, it ran best in Speed Density Open Loop mode, but Speed Density Closed Loop ran alright as well. Closed Loop Maf was a pain, but I was tuning it in the middle of the summer (90 to 100 teens temperatures).

red02Hawk

iTrader: (9)

i just sent my pcm to texas speed, best $225 i ever spent. But i have read it again and again, go MAF whenever you can, it is more forgiving. That is unless you know a badass tuner that can do the speed density tune.

98RedBird

iTrader: (77)

Dude, tune it with the MAF, it'll be perfectly fine under 450

Skeet Skeet

I know this mite sound stupid but what is the dif?

JoeyGC5

iTrader: (24)

MAF tune relies more on computer calibrations and calculations to correct for fueling at all times. Speed Density is basically at this throttle position and this MAP value you have this setpoint of fuel.

KrisXpc

iTrader: (13)

Speed density dumdumdum..

Thats what I went with... Till I spun a rod bearing and went the 408 route =]