H&S/KEM ???

[Stroke4Fun]

I am thinking of getting the 345 tune fron kem for my black maxx but i here allot of guys comparing it to the 275 tune i would like to hear a good comparision of the hot damn tune to the 345 tune is there a noticable power gain and is it worth getting as a DD?
Chris

[08twinturbo]

From what people are posting. The 345 and the hot damn dynoed about 550. So they appear to be the same power wise. It is stronger than the 275 but not as strong as the 310. It is a perfect daily driver. I use it daily.

[Stroke4Fun]

That is what i have been reading i used to daily drive the 310 with the spartan loved it execpt the touchy pedal and the really hard shifts not great in traffic! dont make sence buying a tune that is about the same as i already have thats why i am asking for input from current users.
Chris

[PRO-4 #31 Champ]

i used the spartan 250 for some time and i bought the 345 kem and its night and day diff. the 345 is so much nicer for a dd shifts nice and when you get in it it shifts harder.

[505powerstroke]

thats sooo funny that this question was just asked, earlier today i just swapped my 345 tune for the hot tune by h&s for the first time and the hot tune really surprised me, id agree that its just as powerful but not as touchy of a pedal, and also doesnt idle as high, my kem 345 idled at like 900-950, hold the brake or youll run over the car in front of you! so long story short i agree with 08twinturbo
oh, and the one other thing i noticed is that the kem 345 makes about 36-38 psi and the hot tune makes 45-46psi!! thats a BIG difference! must be 2 completely different power strategies by 2 different tuners, wonder wich one is safer?

[Ipkyss]

if there both just as quick, I would rather the one with less boost.

[08twinturbo]

Hey, I haven't had a idle problem. Also mine boosts about 46 Psi max. I feel a definite power increase from my spartan 275. As long as the shifts remain good, I probably won't swap back. I also like the fact that it takes very little throttle and boost to drive around. It's like the truck is under no strain.

[powerstrokedub]

Is the 345 shif ton the fly? Also how safe is the 345 in comparison due to the lower boost levels. Even on h&s 225 hp tune I can see 46 psi boost!!

[Ipkyss]

What are you guys seeing for EBP at say 20lbs of boost and full throttle? The tunes that run low boost run soo much better in my truck.

[08twinturbo]

I have seen 70-75 ebp at wot. Have not checked at 20 psi, but I can tell you it is totally driveable at 5 psi of boost.