Full Stock Baseline Dynos compared To nothing
Registered User
Joined: May 2008
Posts: 448
Likes: 1
From: Northern Virginia
He did a baseline, some more pulls after install but he wants to do again tomorrow night when the conditions better match the baseline conditions. Never mind that a Mustang Dyno can correct for these variables....he still should post up what the pulls were. We know the conditions were different but what is the harm in showing us?
You are not suppose to remove the covers... Thats for track use only... So yes it is safe...
This guy better not dyno it like that either(covers removed)... well until he posts a normal dyno...
Registered User
Joined: May 2008
Posts: 448
Likes: 1
From: Northern Virginia
Of course he is going to dyno like that, why else would he have taken them off? You have to remove the bumper to put them back in.
I did not come right out and say it in my earlier post but eluded to it... If he has these out when he dynos, then his dyno results are not truly representative of what those who leave them in may see. If Injen wanted them out, they should have included that in the directions or provided new inserts.
Of course he is going to dyno like that, why else would he have taken them off? You have to remove the bumper to put them back in.
I did not come right out and say it in my earlier post but eluded to it... If he has these out when he dynos, then his dyno results are not truly representative of what those who leave them in may see. If Injen wanted them out, they should have included that in the directions or provided new inserts.
I did not come right out and say it in my earlier post but eluded to it... If he has these out when he dynos, then his dyno results are not truly representative of what those who leave them in may see. If Injen wanted them out, they should have included that in the directions or provided new inserts.
It appears that there were no major results, if anything a very little increase in hp. Even if he goes back tomorrow and gets a dyno that shows some increase, I do not see how it even matters. Most of us will not be driving at the same temp all the time. So will the intake only be effective on certain days or months when the temp is cool enough and other months be no better than stock? 
Registered User
Joined: Apr 2008
Posts: 330
Likes: 1
From: Jersey Shore
Yep you should yield more hp and subsequently more gains in cooler temps.
Man the whole issue of how much hp injen really makes has been a grand mystery and yet continues to be. To me this means that I should not get my hopes up.
Man the whole issue of how much hp injen really makes has been a grand mystery and yet continues to be. To me this means that I should not get my hopes up.
I think it is necessary to point out that the brand “N” system is specifically made for the 350Z and most defiantly NOT the G 37. We have concluded as Cobb has, that there is no better way to go than the stock intake system we have dyno tested a fleet of these cars with an amazing array of intakes (and those tested in the Cobb test) as well as others and in every instance, there was a power degradation. (Strangely this is not the case with the 350Z) We even changed the MAF output to see if there was any way to coax more power form the car and that was met with failure. Because we have some electronic skills here with respect to slewing the MAF output signal, we even tried larger diameter intakes with obvious more flow to no avail.
As far as intake flow goes we were able to gain 18% more flow but that did nothing for power which suggests that there may be an issue downstream of the intake system. For example, the Nissan ECU's control the valve timing for best torque while creating a small amount of exhaust backflow into the engine (via exhaust cam timing) for NOx control, no intake system can overcome that situation. Aside from the variable cam timing, the drive by wire (DBW) regulates the throttle opening and on our testing we see that the throttle opening changes as air flow was increased which effectively cost power.
We were able to get a gain of 3-4 hp at the wheels but the system we made to do this would not even get close to fitting in the engine compartment. I will say that what we did do incorporated the stock air boxes. We will not be marketing a system until there are tangible gins.
JC
As far as intake flow goes we were able to gain 18% more flow but that did nothing for power which suggests that there may be an issue downstream of the intake system. For example, the Nissan ECU's control the valve timing for best torque while creating a small amount of exhaust backflow into the engine (via exhaust cam timing) for NOx control, no intake system can overcome that situation. Aside from the variable cam timing, the drive by wire (DBW) regulates the throttle opening and on our testing we see that the throttle opening changes as air flow was increased which effectively cost power.
We were able to get a gain of 3-4 hp at the wheels but the system we made to do this would not even get close to fitting in the engine compartment. I will say that what we did do incorporated the stock air boxes. We will not be marketing a system until there are tangible gins.
JC
Not too surprising, considering what COBB and AEM have both said about the G37 and aftermarket intakes:
http://blogs.cobbtuning.com/?p=160
http://blogs.cobbtuning.com/?p=160
