help!!! I installed 450's and smc and car wouldnt start..so changed out 450's for another set....caught for a second stumbled and died.. so uninstalled 450's put back stockies, rewired everything.. turned smc to 0 programmed it..car still wouldnt start..so now i take off smc..car finally starts then dies so i try again coaking it to life with the gas pedal..running really rough, start pushing gas and a really hollow sound starts coming like a HUUUGE vac leak or something freaky..let off gas car dies..now it wont start anymore anyone got any ideas what could be wrong???car was running fine before smc and 450 installation...now it wont run at all

 

need this guy to be running soon bump for some help..

 

bump

 

what kind of car??? are you sure the injectors (stock) are wired right???

 

What car and year?? Need more info before we can help.

 

I had this problem after I installed my 450s. I had forgotten to lean the AFC before trying to fire it up. I think I fouled the plugs, and flooded the shizzle out of it. WD-40 the 450s, reinstall, doublecheck everything. Make sure to give it time to dry up and check the plugs. Also, make sure the SMC is set up. Once you get it started, don't shut it off until you have everything set up. I.e. let it come up to temp, tune it as much as possible etc...

 

check and make sure your map sensor is plugged in and wire properly...

 

yeah my stocks are back in..98 dx hatchback..civic... i heard that the bogging i got when i started it up with stocks was from the map sensor..but only thing i touched was the map wire at the ecu...but i put them back together