No, my GSR shell had a LS motor in it when i bought it, now I built a relatively cheap b16a jdm with many itr internals and i just put it in my gsr... The fuel pump did spray non stop, but i fixed that and now when u turn the key 2nd they spray like they are supposed to for like 2 seconds, but when i turn my car ON, there is gas shooting out the exhaust, and when i take the spark plugs out they are all black (too rich), and on cylinder 2 i can see gas just sitting there when i look throught the spark plug hole. I am using 2 ecu's (not at same time), and have found that the p72 works better than the p28 chipped...