Motordyne Plenum Spacers, Non-RevUp Engine Feedback
#151
10-10-2005, 03:11 PM
#153
10-15-2005, 01:17 PM
Join Date: Apr 2005
Location: Arlington TX
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Motordyne Plenum Spacers, Non-RevUp Engine Feedback
I had the MD ½” spacer+ Iso Thermal kit (Aramid gasket and CCV), installed on my 2003 5AT G35C. I disconnected the negative battery cable and pumped the brake pedal to reset the ECU. It’s a 50+ mile drive to the dyno, made sure I showed the ECU I meant business that day.
Found out I could break the tires loose in 1st and 2nd, SLIP light flashing. I was shocked how much faster the G felt throughout the entire RPM range.
I ran the AC, as Hydrazine suggested, for the last 10 minutes of the drive and shop turned it off once it was on the dyno. The dyno shows I gained 15HP and 17 FT-LB. The gain was throughout the entire RPM range. I personally feel this is one of the most powerful mods for a NA motor. Also the biggest bang for the buck
Before
Invidia G200, Z-tube+K&N
234.31 HP 212.49 FT-LB
After
Invidia G200, Z-tube+K&N, MD ½” spacer with Iso Kit
249.00 HP 229.91 FT-LB
I was able to recover the torque I lost, plus add 8 FT-LB. Next plan is to add an X-pipe to my Invidia G200. I’m hoping to add another 4 to 5 FT-LB through out the torque curve.
Found out I could break the tires loose in 1st and 2nd, SLIP light flashing. I was shocked how much faster the G felt throughout the entire RPM range.
I ran the AC, as Hydrazine suggested, for the last 10 minutes of the drive and shop turned it off once it was on the dyno. The dyno shows I gained 15HP and 17 FT-LB. The gain was throughout the entire RPM range. I personally feel this is one of the most powerful mods for a NA motor. Also the biggest bang for the buck
Before
Invidia G200, Z-tube+K&N
234.31 HP 212.49 FT-LB
After
Invidia G200, Z-tube+K&N, MD ½” spacer with Iso Kit
249.00 HP 229.91 FT-LB
I was able to recover the torque I lost, plus add 8 FT-LB. Next plan is to add an X-pipe to my Invidia G200. I’m hoping to add another 4 to 5 FT-LB through out the torque curve.
#155
10-15-2005, 08:16 PM
#157
10-20-2005, 11:03 AM
Join Date: Apr 2005
Location: Arlington TX
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I've notice on my 03 5AT, resetting the ECU helped my mods.
Pedal Method
https://g35driver.com/forums/engine-drivetrain-forced-induction/6526-easy-ecu-resetting.html
or
Disconnect the negative battery terminal and hit the brake pedal once or twice to discharge the electrical system. Then reconnect the negative battery terminal. You will have to reprogram your presets on your radio.
Pedal Method
https://g35driver.com/forums/engine-drivetrain-forced-induction/6526-easy-ecu-resetting.html
or
Disconnect the negative battery terminal and hit the brake pedal once or twice to discharge the electrical system. Then reconnect the negative battery terminal. You will have to reprogram your presets on your radio.
#158
10-20-2005, 12:22 PM
Join Date: Dec 2004
Location: was: Long Island, NY -- Now: South FL
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#159
10-20-2005, 12:25 PM
#160
10-20-2005, 12:40 PM
#162
10-23-2005, 11:48 PM
I just installed the Motordyne 5/16 Spacer with the Aramid Spacer this afternoon. I'm waiting for the Copper Throttle Body heater to arrive, and I'll finish up the install.
On my own, it took about 1 1/2 hours, including cleaning all the baked on brownish stuff off all surfaces. (Hint: Use an Intake Cleaner Spray while everything's apart)
The Motordyne is a very complete kit, and quite easy to do. I didn't un-bolt the throttle body from the upper plenum, I just ran a piece of nylon twine from the hood hinge mounts, and through the front hole of the upper plenum to suspend it out of the way.
I did some pre-install 0-60 runs using my G-Timer, and when the ambient temp is similar, I'll try to do some post runs to see if the difference shows there as well. Also measured some pre-install temps at various points on the plenum with an infra-red thermometer, but I suspect that the difference won't be too significant until I install the TB heater.
I didn't have time to do more than a quick drive to the store, but in my brief drive, the spacer seems to be a winner. Drivablility is not negatively affected, and in fact, low rpm response seems to be improved. A couple of WOT runs seems to confirm a stronger pull, so I would say there is a noticeable increase in torque.
On my own, it took about 1 1/2 hours, including cleaning all the baked on brownish stuff off all surfaces. (Hint: Use an Intake Cleaner Spray while everything's apart)
The Motordyne is a very complete kit, and quite easy to do. I didn't un-bolt the throttle body from the upper plenum, I just ran a piece of nylon twine from the hood hinge mounts, and through the front hole of the upper plenum to suspend it out of the way.
I did some pre-install 0-60 runs using my G-Timer, and when the ambient temp is similar, I'll try to do some post runs to see if the difference shows there as well. Also measured some pre-install temps at various points on the plenum with an infra-red thermometer, but I suspect that the difference won't be too significant until I install the TB heater.
I didn't have time to do more than a quick drive to the store, but in my brief drive, the spacer seems to be a winner. Drivablility is not negatively affected, and in fact, low rpm response seems to be improved. A couple of WOT runs seems to confirm a stronger pull, so I would say there is a noticeable increase in torque.
#164
10-27-2005, 01:33 PM
#165
10-27-2005, 03:26 PM
