75mm Big Bore Throttle Body Kit Installation Procedure
Contents
1. I AFF ENGINEERING COMM 75mm Big Bore Throttle Body Kit Installation Procedure 2003 2006 350z 2003 2007 G35 Coupe 2003 2006 G35 Sedan 2002 2008 Maxima 2002 2006 Altima 3 5L Instructions can also be used for most other Nissans with the VQ35DE motor Disclaimer This kit should only be installed by a qualified mechanic If you decide to do the install yourself please read everything and make sure you understand everything before beginning NWP Engineering is not responsible for the content of these instructions This write up is to be used only as a guideline to help you during the installation process Refer to the correct Factory Service Manual for the most accurate and up to date information NWP Engineering shall have absolutely no liability relating to the use non use improper use installation or removal of this product This product is not intended for use on public roads and is not DOT approved Please use common sense and ask a qualified mechanic if you have any questions Also feel free to contact us if you need help CAUTION DO NOT attempt to open the electronic throttle body plate manually with your fingers This can result in a misalignment of the throttle body and can prevent the engine from idling properly CAUTION Hood clearance may be an issue with the 350z and G35 if you have an aftermarket hood and or have a 1 2 or thicker intake plenum spacer that raises the height of your intake manifold We measured over2. connector firmly clicks into position Pic 6 9 Install the intake tube on the 75mm Throttle Body Fitment may be snug with the FWD Maxima coupler But the stock couplers on both the RWD and FWD VQ35DE engines can be used Make sure the adapter wire harness is underneath the intake tube and not on top Note If fitment is difficult with the FWD coupler or an aftermarket coupler you may need to remove the coupler from the stock resonator or tube as shown Pic 7 to install by itself then attach the rest of the tube after You may warm up the coupler to make it more flexible by putting it in direct sunlight submerging it in hot water for several minutes or using a heat gun being very careful not to melt the rubber A thin coating of motor oil will help it slide onto the TB easier using two hands as shown Pic 8 Also a larger hose clamp may be required depending on your application 10 Once the entire intake tube and MAF sensor housing is connected to TB plug in the MAF connector connect the breather hose to the intake tube connect the battery and that s it Note The coolant lines on the new 75mm TB will remain open They are not needed since coolant lines already exist just behind the TB on the 350z G35 and Maxima Altima intake manifold Note If you experience a high or erroneous idle or any drivability issues then perform all three procedures below A stopwatch or clock with second hand will be needed to ensure you adhere to th
3. 2 Turn ignition switch OFF and wait at least 10 seconds 3 Confirm the accelerator pedal is fully released turn ignition switch ON and wait 3 seconds 4 Repeat the following procedure quickly 5 times within 5 seconds 1 Fully depress the accelerator pedal 2 Fully release the accelerator pedal Wait 7 seconds fully depress the accelerator pedal and keep it for approx 20 seconds until the MIL stops blinking and turned ON Fully release the accelerator pedal within 3 seconds after the MIL turned ON Start engine and let it idle Wait 20 seconds Rev up the engine two or three times and make sure that the idle speed is normal 550 725 rpm 2014 NWP Engineering Inc All Rights Reserved g oS Pic 5 02 03 Maxima shown w Spacers Pic 8 02 03 Maxima Shown
4. a 1 2 of hood clearance with the stock hood Pic 1 on both the 350z and G35 which did not have a plenum spacer installed 350z shown DO NOT SLAM YOUR HOOD IF CLEARANCE MAY BE A CONCERN Note You can simply measure hood clearance with modeling clay or something similar in consistency Apply the clay to the upper most point of your throttle body and slowly shut the hood fully allowing it to click without slamming the hood shut Open the hood and measure the indentation of the clay to give you an accurate measurement for hood clearance Note This adapter plate is designed to be installed using the provided NWP Engineering Port Matched Gasket and the OEM throttle body gasket Permatex 1 Minute Gasket Item 25229 may be used instead of the OEM throttle body gasket especially if the NWP Engineering 1 4 thick Thermal Throttle Body Spacer is installed The provided NWP Engineering Port Matched Gasket has been extensively tested to handle high boost applications i e 40 psi of manifold pressure to be exact But for the best seal for heavily modified forced inducted engines Permatex 1 Minute Gasket Item 25229 may be used to replace this gasket but it not recommended unless you are experiencing boost leaks due to this gasket Note This adapter plate has also been designed to complement the NWP Engineering Thermal Intake Spacers The correct length self locking bolts have been included in your kit based on your selection at X the time
5. e proper timing specified in the directions below especially with the Idle Air Volume Learning Procedure Accelerator Pedal Released Position Learning Procedure 1 Make sure the accelerator pedal is fully released 2 Turn ignition switch ON and wait at least 2 seconds 3 Turn ignition switch OFF and wait at least 10 seconds 4 Turn ignition switch ON and wait at least 2 seconds 5 Turn ignition switch OFF and wait at least 10 seconds Pic 7 Throttle Valve Closed Position Learning Procedure Maxima Shown 1 Make sure that accelerator pedal is fully released 2 Turn ignition switch ON 3 Turn ignition switch OFF and wait at least 10 seconds Make sure the throttle valve moves during the above 10 seconds by confirming the operating sound Idle Air Volume Learning Procedure Before performing this procedure make sure that all of your electronics are OFF including your radio headlights all interior lights AC AC Heater Fan rear defroster and any aftermarket electronics such as speaker amplifiers power inverters and cell chargers Also make sure these conditions are met if you are having problems successfully doing this procedure Battery Voltage More than 12 9V at idle Engine Coolant Temp 158 212 degrees F Automatic Shifter In Park Steering Wheel Straight Ahead Position Vehicle Speed Stopped Transmission Warmed up usually requires a 10 minute drive 1 Start engine and warm it up to normal operating temperature
6. fficult to thread in by hand This is normal A small ratchet or allen wrench may need to be used Be careful not to over tighten Also each self locking bolt can be used up to 15 times CAUTION Do not confuse ft lbs with in Ibs Damage to expensive parts can result 2014 NWP Engineering Inc All Rights Reserved 6 Tighten the 4 self locking bolts to 5 to 7 ft lb 60 84 in lbs in numerical order as shown Pic 4 Check all bolts at least 2 times in numerical order to confirm proper torque Wipe away any RTV that may have squeezed out in the airflow 7 Using the provided 6x50 SHC throttle body bolts with lock washer and the provided gasket install the 75mm Throttle Body and tighten bolts to 5 to 7 ft lb 60 84 in lbs using the same numerical pattern as shown Pic 4 Pic5 Note If you did not purchase your 75mm TB from us you may need to slightly bend the left coolant fitting upward to clear the valve cover on the 350z and G35 All of the 75mm Throttle Bodies we sell are guaranteed to fit and are cleaned and polished by hand Note On the 05 06 Altima and 04 06 Maxima the Pic 4 75mm TB should be installed with coolant lines facing up due to clearance with the firewall and or EGR valve Also the NWP Intake Spacer Kit is required if you have the stock EGR valve installed 8 Install the VoltageDrop net Plug amp Play Adapter Wire Harness between the stock TB connector and the new 75mm TB making sure each
7. of purchase If you do not have the correct length bolts to suit the 1 4 thick Thermal Throttle Pic 2 Body Spacer please contact us and we will be happy to assist you 3502 shown Tools Needed Basic Metric Socket Set 5mm Metric Allen Socket Pliers and Torque Wrench that reads in in lbs Estimated Labor Time less than 30 minutes 1 Unplug negative battery cable 2 Remove engine cover Disconnect MAF connector Disconnect breather hose from intake tube Then remove entire intake tube from Throttle Body TB Pic 1 3 Unplug the Drive By Wire Electronic Throttle Body connector 4 Remove the throttle body TB from the manifold by removing the 4 socket head cap SHC bolts with 5mm allen wrench Pic 2 Note If a 1 4 NWP Engineering Throttle Body Spacer is already installed you may need to scrape off existing RTV on that one side of the Spacer that s exposed Try not to remove the Spacer if it s firmly stuck to the intake manifold Less work for you to do Then apply a paper thin layer of Black RTV to the Spacer or intake manifold Or you may use an OEM TB Gasket instead 5 Using either the stock gasket or Black RTV install the NWP Engineering Adapter Plate NWP logo Pic 3 facing up using the 4 provided self locking SHC bolts Be sure to line up the Adapter Plate to provide l f Maxi h TBS the best airflow possible Pic 3 a Onn pannu Note Due to the self locking patch on the threads these bolts may be di
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