what exactly is an 87.5 t2 ?
 

also how do you know which injector to get ?

Id like to know this too. I have an 87' T2, but not sure if its pre or post 87.5 though I think mine has Peak and Hold

A TII made in the second half of 1987. You will need a high impedance injector for that one.

Well I think he wanted to know how to identify which he has. i think, not sure, but you check the Vin#, which numbers represent which production I dunno

87.5-88 have purple tops, 86-87 have tan tops, per the FAQs. FYI, the ones listed as 88 on the injectors list really mean 87.5-88. I know you can tell by the VINs as well, but I'm not sure what the specific numbers are.

well i think that my be my boost/lean out under load problem i was sold red top inj. and i didnt know that they were red till i got them and i thought i needed tan since thats what i pulled out of mine. but now i need tan secondaries and also if perhaps i have na injectors in a turbo would it go lean under light loads and wouldnt boost at all

If you have NA injectors in a TII, then it will be lean everywhere. I wouldn't drive it until you get the right injectors to be on the safe side.

it has stock primaries but red secondaries

ah, ok. Keep it out of boost then. It will be unaffected below 3800, because its running only off of the primaries.

but it is affected below 3800 more like 2500 and it runs good under 2k but under load after 2300 ish it wants to go way lean and cut out if more throttle is applied i can cruise down the interstate at 60-70 at very light throttle and watch the narrow band af guage and keep it rich or stoich but if i go uphill a little then it goes lean any suggestions?????????

im so freaking tired of this problem......

well a friend of mine looked at his s4 t2 injectors and he has red secondaries too so why doesnt anyone say that the s4 t2 had redish secondaries????
can any one explain this both of ur cars are stock fuel system except filters and walboro pumps....