turboB20_DA9

Hello, i have a 1990 LS Integra with a B20B swap. I bought the car with the B20 swap semi installed. The previous owner was a total dipshit with the car but i picked it up for cheap so I decided to make this my autocross/drag car. The mods that were on the car when I bought it was
-b20 swap
-Solid motor mounts
-H&R lowering springs
-Suspension Techniques front and rear sway bars
-Crower stage 2 turbo camshafts
-AEM cam gears
-Konig B-Bombs wrapped in Toyo T1Rs




the car ran but didn't idle when I bought it. I was told by the previous owner and the shop mechaninc that it was the IACV.

I got the car home and began to work on my turbo kit. After 3 weeks, I got all the parts for my kit and the install began by one of my friends that is a certified mechaninc.
During the install, he found that the cam gears were not tight and were spinning loosly and that the cams were not installed correctly. The car was missing many bolts and was a hack job install of the b20 by the previous owner. My mechaninc did a great job replaceing all the missing bolts and rewiring and replacing the other guys mess ups. After 3 weeks the kit was done and installed and lots of other little things were fixed on the car. The kit consisted of
-Air Research t3/t4 .57 trim turbo
-Blox manifold
-Tial 38mm wastegate with 7.2psi spring with dump tube
-custom 2.5 to 3 inch downpipe.
-custom 2.5 intercooler piping with t bolt clamps
-Godspeed intercooler
-Civic half radiator with 12" slim fan
-Thermal R&D 3" exhaust
-3 inch airfliter
-Greddy knock off blow off valve
-OBD1 to OBD0 conversion
-Chipped ecu, base map on chrome
-450cc DSM injectors
-Walbro 255 fuel pump
-Rota Slipstreams wrapped in Nitto Gens
-Auto Meter Boost gauge



So now for my issue,
ISSUE 1: the car hunts for an Idle between 500 and 1500 rpms. The car will idle but revs up and down and up and down and up and down.
ISSUE 2:The car will also die when coming to a stop after driving it for a while, say 30 mins and up.

Replaced the IACV with 3 others with getting slightly better idle than when we pick it up but still not great. The camshafts have been installed correctly and tightened down and a valve adjustment has been done correctly. We have gone over the motor many times and checked all the bolts on the intake manifold to the block and the bolts of the throttle body to the Intake manifold. There are no boost leaks on the piping or intercooler. Throttle body has a gasket and same with intake manifold. Unplugging the MAP sensor hose causes the car to idle higher but stay at the same rpm. Blocking the hole with my finger causes it to drop to around 1000rpm but stays even there. We replaced the MAP sensor but still hunts for Idle. No other vaccume leaks that we can find. The car is just on a base map and will be tuned using chrome this weekend. I hope that its just from being not tuned but would also like to find and fix the issue before the tune. I also replaced the main relay and it is good.
Once the car dies, I have found that when I pull the cap off the distributor and let it cool off for about 5 mins, the car will fire right back up. I have replaced the igniter in the distributor and that helped with the idle issue as well. I am thinking that replacing the coil is a good idea as well. Ideas on where I can get one? Autozone schucks? Im not sure but is a 0BD0 coil compatable with a OBD1 distributor? Keeps me from having to buy a new one
My mechanic also says that I should remove the crower cam and replace it with a stock cam setup. He said that it too could be causing a bad idle. I would like to keep them on the motor but not at the sacrifice of the car running correctly.
The car is in rough shape right now body wise but hood, bumper, fenders should be sanded and primered before autocross season. This is my 5th DA, 2nd B20 swapped, first turboed. Thanks and sorry for the long post but any help would be great

DirtyDA9

Test your TPS. I didn't bother reading all of that, I have a headache so.... lol. But I skimmed and didn't notice you mention TPS. So test it.