Pewterme

It seems that a tune can correct the bucking, but as you said above it takes hours and sometimes days to perfect. I would be more inclined to say days when you start getting into bigger cams. I'm sure alot of people are like me where the tuner is 2 or 3 hours away or farther and it's hard or impossible to leave your car there for days for them to work on. I'm also curious just how much time a tuner is willing to spend to get it PERFECT for 500.00 or so. I guess until I have the time and or money and I guess the luck of finding a fantastic tuner I'll just have to live with the small inconvenience of a little bucking when I'm crawling in 1st.

Patrick G

iTrader: (14)

If you can find a tuner with the Roadrunner real-time tuner (works with EFI Live), you can get your drive tune nailed in 1/4 of the time. Even a really nasty cam can be tuned in hours instead of days with the Roadrunner. Pewterme, your cam is pretty small and would not pose a challenge to any competent tuner.

PREDATOR-Z

It is a combination of fuel, timing and also in the idle cracker table.
i've reduced mine by 97%,

Ryan02SS

iTrader: (3)

The only bucking my setup will ever do is if I am in too high of gear for the speed. Say 4th gear 1200rpms at 25mph. Going through parking lots I can put it in 1st gear and let it idle all day with no bucking. Proper gear ratio and cam selection also play a good part. The larger the cam the lower gearing needed.

99blancoSS

iTrader: (115)

OR find a tuner with a Mustang Dyno.

You've got two basic options to "properly" tune the car.
Drive around for ever and log real world data and adjust or use a dyno that can simulate real world driving conditions.

A tune on a dynojet is bushcuck in my mind. Your only tuning for WOT there and that is usless for everyday driving.

austin21

thats impressive ...i dont no if mine would do that but then again like everyone has suggested with a good tune might be able to

obrien24

iTrader: (2)

I have the MS3 in my car. I can drive around at 40 mph in 6th gear with 4.10s with no bucking. However, when I try to idle through my complex in 1st 2nd, or 3rd, I get some bucking. Its alot worse in 1st and 2nd, but 3rd isn't too bad. Whats odd to me, based on what I am reading, is that my car bucks less with more load on it. If I put on my taller slicks, I can idle in 1st and 2nd with very little if any bucking.

GuitsBoy

iTrader: (4)

I feel that a proper tune will greatly cover up cam bucking, but wont altogather eliminate it. I have a feeling it has to do with how when your idling, youll see a particular MAP reading, but as you just start to crack open the throttle, the MAP will actually lower down. Continue opening the throttle and the MAP eventually goes up. I have a feeling theres just no realy way to accurately tune for how you can have a MAP point below IDLE map both during Accel and Decel. The same point would clearly have to be different to fuel correctly. I believe this is why when I view logging histograms, ill have a large descrepancy between max and min values at low load, low rpm cells, but above idle min and max are very tight.

And also, this is not when lugging the motor. My bucking takes place at no or very low loads, like when youre just giving a couple % TPA.

eamador11

I agree, 110 lsa is not your normal street cam..more for 1/4mile track. your MAF is like, WTH am I doing with the air below 1500rpm?"

SD tune may be your best bet.

NicD

iTrader: (7)

I don't care what anybody says, there is no such thing as a perfect tune with no hint of surging or bucking with larger cams. You can do your best to minimize it with proper fueling/timing and throttle cracker/idle adjustments, but it will never drive "like stock".

PREDATOR-Z

i beg to differ, it is not LSA you should look at but overlap. That cam has 10* overlap and can be tuned easily. Push comes to shove you can keep MAF and tune OLMAF

Pewterme

Interesting ideas and opinions on here. It does seem there are alot of people that do have bucking to some degree or another though. The ones that have a good tuner in their hometown seem to have the best shot at getting the perfect tune.

jegten

iTrader: (22)

hey, Pewterme, that's my cam!! lol
i just got it last week. hopefully, it will go in in two weeks.
mine is on a 110+2!! and XE-R lobes.

i am shooting for no bucking and good driveability. i know it will have a lope.
how do you like the power on it?
let me know.
also, Patrick G recommended it to me. i believe it will be a tedious process to tune it, but, i am hoping for the best.

thanks, man!

ringram

You can also try efilive custom os5 which allows alpha-n fueling. Guys with 24x cams are using this to clean up bucking and low speed issues. Basically both SD and Maf will get scared with the pressure waves and erratic flow of a lopey cam, alpha-n just uses TPS and RPM to fuel the engine. Which is much more stable as opposed to manifold pressure or mass air flow when faced with valve overlap and reversion.

jegten

iTrader: (22)

hey, ringram,
so, for us with HPTuners, what are our options with respect to what you just presented?

Pewterme

I really like this cam, makes some good power. Hopefully your tune will be good enough that you don't have any bucking. Patrick G also recommended the cam to me. The only suggestion I would give you is to be sure and have the cam degreed. I didn't the first time and only picked up 6 lbs of tq. Had it degreed and ended up getting 32 total ft lbs of tq. Be sure to let us know your results.

The Dragon

iTrader: (6)

Big ditto to all that.

I have a "healthy" cam too

No bucking here

jegten

iTrader: (22)

so, when you didn't degree it the first time, was it installed dot to dot?
that's quite a difference.
are your cam specs like mine?
yes, i am planning to start in a couple of weeks, heads, cam, ud pulley, R lifters, and 42lb injectors, quite a bit at the same time. yikes!
i sure will keep everyone posted.
let me know.

jegten

iTrader: (22)

hey, Pred,

what did you reduce by 97%?
all three?

SSilverSSurfer

iTrader: (8)

so do gears help out with that problems?