You lose HP and TQ if you combine any of those parts. You can only have either an upper plenum, a spacer, or the lower plenum. You can try a lower plenum and have a spacer if you want, but from what I heard that by doing that then its too much air for the ECU to compensate and it resets back to factory settings. I have not seen anyone here or anywhere combining plenum parts and actually benefited from it.

 

Very good gains at 2000 and 6400 rpm.

 

what would you think about a lower plenum and upper plenum with a turbo xs utech piggyback?

 

im thinking about picking up a plenum should i go with the upper or lower please soembody let me know which one i should choose

 

I'm curious, how can you install it wrong? The spacer only fits one way because of the shape having to match the plenum and gaskets.

 

if i'm not mistaken the bolts have to torqued properly and also there might have been leaks..

 

As a contestant, I attended the plenum mod shoot out and saw the dyno plots that day.

To be fair to the guys at AAM, it looked like the ECU suddenly pulled timing on that particular set.... Almost as if the knock sensor was hit by one large knock and it suddenly yanked back timing.

I don't think their mod could have caused a decrease in power anywhere in the curve unless timing was pulled. By looking at the dyno plot it was fairly obvious what happened. Timing was abruptly pulled.

Although the rest of us didn't encounter it, ping was (is) a unpredictable risk that could have happened to any one of us at the competition. Chalk it up to random luck of the draw.

The ECU reacted to the random hit of a ping.

 

That makes sense.

I was running a stock dyno on a 97 Maxima SE I use to own, and the first two runs hit 168 fwhp, which is quite good for a stock 97, then on the third run the timing being advanced must have taken it's toll.

The ecu suddenly pulled timing, and the car made 149 fwhp!

If the test car leaned a little bit too much, due to better air flow, than it could have pinged.

Considering how well my car ran during it's last trip to the track, after the AAM install, and cheap gas, I have no doubt the increase is in the 10+rwhp area.

 

IMO the plenums/spacers all do roughly the same

we're talking 1-2hp/tq difference at different rpms between all the different setups

I know there's minor differences, but it still isn't the hugest big deal difference out there. I know for NA it's important though, but still it's going to be different with each car with different mods

 

I am sure that it is something like that. No worries AAM.

 

But I am really interested in how the lower plenum did. Can someone give a brief synopsis on that?

 

I think that might have been my car althought I have not seen the issue yet.

 

Yep that was your car ed.

 

9-10 HP increases in the 2000, 3500, 4000, 6400 RPM range. 3HP/3TQ peak gain

 

Did they test Kinetix SSV?

 

No.

 

Mike,

Please note that I personally believe you have a good product and our test results were not typical for the AAM Spacer and I said so in my article. However, my test observations and memory of our conservation certainly differ from yours. During our conversation you mentioned that we may not have installed it correctly. I said I didn't think so, but would look into it. I did.

We installed the AAM Spacer according to the supplied AAM instructions, including step 13. Tighten all bolts to 4.9 - 6.9 Nm (0.5 - 0.7 kgf-cm, 44 - 61 inch lbs). The engine idled smoothly, there were no vacuum leaks, the engine sounded strong during the dyno pulls and the air/fuel looked very good.

As for our telephone conversation... immediately after crunching the AAM Spacer numbers I called you and asked for your help in determining why your product didn't do well. At that time we agreed that our results were not typical and that you'd provide other stock engine-AAM Spacer dyno results. To date I have not received the promised information.

 

Thanks, Diesel. That sounds pretty good.

 

hm thats interseting. so for 300 hp cars... putting on a 287 hp lower plenum you gain power up till like 6500 rpm or so.. and for 287 hp cars if you put in the 300 hp lower plenum.. you make power..

something just doe'snt make much sense..

if that really is the case.. then we all should just start trading plenums =o

 

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