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each sensor in the cps has a ground wire. that is the three wires connected together. you cps wiring is hard and fried. the wire insulation will crack and wiggle there causing another break. you will get crap signals from this cps especially if the ground wires are wiggling changing the...

oh and i dont think you can switch from serial to computer on the fly with a switch. the aem senses if a serial or laptop is plugged in when first crancked and uses two different output programs. one for computer tuning and one for serial gauge displaying. but the switch may be used to go...

the serial gauge can show up to 19 different outputs. i have throttle, water temp, air temp, oil presure (not oem), boost, a/f, and soon oil temp and speed displayed in my serial. you rotatethru with the two buttons on the gauge. you do have to convert the raw output units into a formula for...

here is how to change microbit sec. it is in the first reply on this boost fuel comp thread that every aem owner should read repeatedly till it is understood. http://forum.aempower.com/forum/index.php/topic,11494.0.html first reply is as follows: "Bummer - can't attach files here or...

it is hidden in the 3000 GT ignitor thread on page 2 as here: http://www.supramania.com/forums/showthread.php?93950-3000-GT-ignitor-wiring-for-a-standalone/page2 just some cutting of the ground wire on 4,5,6 injectors and wiring them into aem inj 7,8,9 then putting in the numbers in the...

i found the aem or mac boost selonoid works better than the gm selonoid. the aem can control boost very well with the aem/mac selonoid. the tru boost works great also but as stated use the money for atleast one aem serial gauge. i have the 3 channel ignitor on my aem and it is a must. get...

i think the only sensor that is different on the 89+ engines is the ECU temperature sensor on side of the T stat housing. i think the pre 89 is brown and the 89+ is green. just switch them as the plugs are different on the harness. 91+ harnesses have a square 02 sensor plug. oh and of...

i think the cps can give the aem some problems at about 2800 to 3200 rpm and cause the stumble. I set my cps to a specific spot and the stumble went away. set it so at TDC the pointer is about 1/4 inch before the top right G1 prong and then set the timing with the aem according to the...

also getting the car to idle with the isc took oh about 2 years to get right. some of the aem rpm tables mess it up. also the drivers in the aem that move the isc selinoid are not strong enough to move it consistently so the aem tries to move it to position 40% but it is really at only 32% so...

need to know map sensor, ait sensor, injector brand and size. any wideband installed? you do need one. turbo size would help. i can get a base map to run the car to take to the tuner or maybe even get the car tuned reasonable well. i have wired in mine for sequential injection and it is...

i had problems with boost control on my aem ems for quite a while. i was tuning a calibration based off the aem start up map. A tuner i was using stated he has had success with boost control on mk4s but not mk3s. i found that the base map for mk4 has a map tooth filter of 6 and the mk3...

Here is the finished head. Swain Tech coated the chamber, exhaust ports and valves. and intake valve surface in the chamber. also the piston skirts had PC-9 coating and the piston top with Gold coat. so the entire chamber is coated to keep heat out of the engine. this was a few years back...

here are some pics of the casting and valve seat ridge under the seat. i ported my head myself and it was not that hard with a lot of research on what to and what not to cut. just getting rid of that bump under the seat and smoothing out all the rough casting really helps flow. i had mine flow...

only about 1/2 inch to 3/4 up here in jackson (50 miles north) i remember back in April 1st 1987 it snowed and iced in Hattiesburg MS (60 miles north of the gulf) and iced in New Orleans. classes were cancelled at USM. Party time. some of you youts may have been conceived on that night.

when you install the sequential injection and the ign phasing is 4.5, 8.5, 0.5 on coil 1,2,3 do we need to put any ign phasing numbers in coil 6,7,8? Or do we just put injector phasing number in for inj 1,2,3 and 7,8,9? which would work independent to the ing phasing numbers. in other words...

we solved the problem. my coil harness for the 2jzge coils is slightly different than the oem 7m coil pack harness. the coils are of course waste sparking the correct two plugs. so my ignitor harness is specific to my coil harness. my ingnition phasing numbers are .5, 4.5, 8.5 and it works...

a friend of mine installed the ds62 ignitor and if he changes the spark teeth from 4 to 12 the car dies. he has followed the instructions. the car misses and breaks up when boosting. runs better on multiplex. any ideas? hal

have you selected the injectors in the sensors/injector wizard? goto map as soon as possible and the car will be eaiser to tune. i sent you an email. please list all engine related mods. ie injector, map sensor and where its wired in, ait wired in?, turbo, etc.

you can turn one off at a time and have someone else listen with a stethoscope rod to each injector to make sure it is firing. turning each injector off and on with the check mark should be fine. thats 1,2,3 only cause it is batch fire setup oem. i switched mine over to sequential and its...

by the appearance of the center valley i bet those valve cover gaskets are rock hard. they can leak at the corners where the front cam bearing is. rep those and rep the distributer O ring. get the valve cover set that includes the rubber washers for the bolts. that may not be your only leak...