Hello to all.

I have a 11 G37 Sedan Sport that i have just had the following parts put on:

BERK HFC, Stillen Gen 3 CAI, ARk Grip Exhaust, and m370 manifold.

I had it uprev tuned at the same time as well. I have attached pics of the dynapack results. How do these numbers look ? The HP is low for the mods i've added no? I was expecting at least 300 HP. Let me know what you guys think. Something not right or is this comparable to others? Questions i should call back and ask? Also i didn't get the cable. What does that mean if i want to tune it at another shop or put stock parts back on? I appreciate it.

 

Seems really low for a Dynapak, but without a stock dyno there's really no way to make a comparison.

 

That seems low to me too. I have similar mods as you plus a GTM aluminum driveshaft. I'll be getting an Uprev tune in a couple of weeks. I'll report back with results.

 

Is there any chance that when i took the car into the dealership to have them apply the G37 7speed transmission reprogram fix, this has thrown my ability to tune off?

I know yesterday they weren't able to tune it because the software didn't recognize the file on the car. so they had to contact the vendor and work with them to get it to talk with my version rom.

 

seems a on the low side !! dyno it again on another dyno just make sure

i have seen numbers close to 288hp 250tq with test pipe only

 

Take a look at your afr vs g37sam...(sorry i stole your pic but its the best one for this). His goes down to 12.5 where yours is still over 13.

 

Thank you guys. I'm going to take off the Berk cats and get it retuned. Too loud for my taste. Drone is pretty evident as well. The noise in my cabin is too much. Post back my next results.

 

You should think about buying the Fast Intentions resonated HFCs. No drone or rasp and only slightly louder than stock. There might be a GB going now

 

Seems low to me too . Just intake and cbe should be 300 WHP give or take 2-3 WHP. Plus 1 for the FI RHFC I just got mine today group but . Hoping to get. 315 WHP after these and tune again.

Btw with the m370 and cats should put you right near 320 or so IMO

 

You also have to take a dyno result with a grain of salt. Before then after tells the picture. How they set up the thing changes the numbers. Did you have them check your afr and possibly lower it some.

 

what gear did they dyno in??

 

location, where was the dyno at ? what sea level ?

 

So i took my car to a different shop today than where i originally did as i didn't feel comfortable with their shop and expertise in the matter. I took my car to DynoComp in scottsdale today to have them remove the Berk HFC and throw back on the stock cats. Had them also verify all the bolt ons were installed properly.

The car sounds perfect to me now with the stock cats. We threw the car up on the dyno for a half hour and things looked better as well. See attached. Thoughts??

I worked with Rich there and he was nothing but nice, honest and helpful. They have a new loyal customer. Plan on having them put on my new wheels, springs/sways next. After that 4.08 gears.

 

looks better im thinking the first shop dyno'd in the wrong gear judging by the ratio 3.35...is matters what gear the car is in on the dyno..different gears different numbers as well..

 

Chuckie,

Do you happen to have an automatic and if so did you have the dealership apply the 7spd auto transmission update?