Tech Articles

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U-Bend Replacement Test

For quite some time, there have been many claims and conjectures about the performance impact from removing the factory U-Bend in the exhaust system on the GM 3800 Liter V6 (Naturally Aspirated L36 and Supercharged L67). For those who are not familiar with the U-Bend, it is a bend that GM designed into the exhaust … Continue reading U-Bend Replacement Test

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For quite some time, there have been many claims and conjectures about the performance impact from removing the factory U-Bend in the exhaust system on the GM 3800 Liter V6 (Naturally Aspirated L36 and Supercharged L67). For those who are not familiar with the U-Bend, it is a bend that GM designed into the exhaust … Continue reading U-Bend Replacement Test

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About Knock Retard (KR)

Q: What is Knock Retard? Knock Retard (hereafter referred to as KR) is the response from the PCM to cylinder detonation. KR is the measure of the number of degrees of overall ignition timing advance that must be removed from the engine to prevent detonation from continuing, protecting the engine from damage. Q: What is … Continue reading About Knock Retard (KR)

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Q: What is Knock Retard? Knock Retard (hereafter referred to as KR) is the response from the PCM to cylinder detonation. KR is the measure of the number of degrees of overall ignition timing advance that must be removed from the engine to prevent detonation from continuing, protecting the engine from damage. Q: What is … Continue reading About Knock Retard (KR)

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KR-Graph4: What the PCM Believes to Be Real Knock

Now, is this noise floor parameter REALLY “fixing” KR? Is it really ELIMINATING KR? No, absolutely not. What it is doing is simply masking KR up to a 1 volt. Notice that these graphs indicate by definition that this is a FALSE KR. It is a KR that jumps immediately to a BIG value and … Continue reading KR-Graph4: What the PCM Believes to Be Real Knock

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Now, is this noise floor parameter REALLY “fixing” KR? Is it really ELIMINATING KR? No, absolutely not. What it is doing is simply masking KR up to a 1 volt. Notice that these graphs indicate by definition that this is a FALSE KR. It is a KR that jumps immediately to a BIG value and … Continue reading KR-Graph4: What the PCM Believes to Be Real Knock

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Build Sheet For a L36 Car (Not Supercharged)

ZZP 1.0 PCM Year of your car:XXXX Model:XXXX Core charge:I am sending in my PCM first Option 1:none selected Option 2:stock gearing Option 3:stock injectors Option 4:Rear O2 deleted Wizaired Cold Air Induction System (+10hp) Model:Standard Option 1:Add 4 inch K&N filter HV3 High velocity intake insert (+20hp) Option 1:Add throttle body rubber gasket Option … Continue reading Build Sheet For a L36 Car (Not Supercharged)

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ZZP 1.0 PCM Year of your car:XXXX Model:XXXX Core charge:I am sending in my PCM first Option 1:none selected Option 2:stock gearing Option 3:stock injectors Option 4:Rear O2 deleted Wizaired Cold Air Induction System (+10hp) Model:Standard Option 1:Add 4 inch K&N filter HV3 High velocity intake insert (+20hp) Option 1:Add throttle body rubber gasket Option … Continue reading Build Sheet For a L36 Car (Not Supercharged)

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ZZP L36 Supercharger Kit Install Instructions

Check out this install guide for a L36 Supercharger Kit! 07 ss fuel rail 08 SS fuel rail 09 trim SC gasket 10 latch support 11 latch support 17 pump power 18 rad install 19 air damn 20 injector spacers 21 injector spacers 22 SS plates 23 Flojet install 24 T fill 25 2004+ bumper … Continue reading ZZP L36 Supercharger Kit Install Instructions

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Check out this install guide for a L36 Supercharger Kit! 07 ss fuel rail 08 SS fuel rail 09 trim SC gasket 10 latch support 11 latch support 17 pump power 18 rad install 19 air damn 20 injector spacers 21 injector spacers 22 SS plates 23 Flojet install 24 T fill 25 2004+ bumper … Continue reading ZZP L36 Supercharger Kit Install Instructions

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