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Fuel return goes back to the fuel tank.

no. If the systems restriction causes the flow to come close to its mach number than the system restriction will be at it's highest since no amount of additional flow will cause the fluid to go supersonic within the system making IJ statement valid.

Ok seeing some threads brought up an idea. People now a days rely on dyno's to do thier tuning but I know that alot of oldschool techniques for tuning still apply today and some do not (spark plug indexing). For instance. Reading spark plugs after a run. Who here has done that? Who...

Zazzn you know you can check yourself right? :) Read the spark plugs! They never lie!

Just keep in mind. harness conditions will not be NEW unless you recently reoplaced the harness. So from a time perspective you are looking at 21 years for an 87 and 16 years for a 92. That is a lot of heat cycling time and usually ends up making the wire jacket a brittle mess. Now on...

BTW your logic is flawed. If HKS did in fact use the Japanese TCCS to do thier programming. Well then the VPC will work INCORRECTLY in the US TCCS just beacuse of the EGR inclusion in the fuel and timing maps as the US TCCS is still tuned for EGR. My statement stands. The VPC when it was sold...

AFR tuning difficult? On a piggy back? Unless you have the complete HKS gizmo list (VPC, FCON, GCC) I am going to say that tuning in closed loop is not really tuning, as the TCCS will take control of all the nice stuff you tried to do. On the WOT side. EGR is disabled. So what tuning are you...

Grim as IJ stated the spark plugs look fine. If anything 1/2 are a touch lean but nothing to bad. btw when you read spark plugs. You are looking at the porcelain insulator along with the center conductor. The color of the insulator is what gives you the "reading". If you really want you...

3.32v? Engine bored out to 3.2? Doubtful! Stock bore is 83mm and 91mm for stroke. To get 3.2L by boring alone you would need to increase the bore size by 4mm to a total size of 87mm That is 1mm more than the max. You will be eating pistons in a short while.

They are fuel injectors! Only about a handful of comapnies make them Delphi Seimens Nippon-Denso Bosch all companies sell rebranded OEM injector. The ones to watch out are the ones that are refurb'd like the Venom. Other than that no way to screw up injectors.

...and ask them why and they will tell you a regurgitated answer. Hopefully the next trend to catch on from a modification perspective is the "fling your car of the cliff with you in it" mod.

33% EGR? no way. Not even the Honda insight does that much EGR %. They do 30% and is one of the very very few cars with that much EGR%. Doubt all you want. Ther TCCS is infact tuned for EGR in the us. That like taking whatever favorite standalone and tuning the engine with the...

you just missed a good deal on them that was going on. They are high impedance injectors and they also make them low impedance. ball &seat injectors. Good response.

Not recommended. There is no reason for welding the diff. Even for drag racing. Turning with a welded diff on our nose heavy car is asking to go fish tailing on just about every turn at speed. Not very safe and we are not hnoda's!

curse them! It is close enough for either but yeah :)

btw. It was never that straight ;) They blocked the front thermostat housing port that comes from the head and ran the pipe from the back to the radiator. The area in the back of the head is a high pressure area (water is moving) and when you block the exit up front then you are forcing all...

well it depends. The richness will take care of the NOx production and as such lower cylinder temps BUT that will also deviate the CO and HC production. The issue in the end though is that at first it will be rich until the TCCS adjust. Once it adjust it will be back at square one. Now keep...

cooling fans (condensor fans) http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?S=AC&P=33 notice when they come on....

Actually they are not. The EGR cooler temps are NO WHERE NEAR what the head is seeing CONSTANTLY. For you to think otherwise is short of ignorant. So keep grabbing, they are still plenty of other straws to grab.

NOPE. EGT measured in the Combustion Chamber hover around 800c degrees. At that point the heat transfer from the hot gases to the head is at it's greatest. Exhaust valves and surrounding port also see around 700c degree at that point. Back of EGR cooler is seeing at MOST 400c and I am going...