450cc DSM Injector question
12-06-2003, 08:24 PM
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450cc DSM Injector question
I recently got a set of 450cc DSM injectors for my 91 tegra LS. At the tip of the injector one of the caps broke off on the end where it sprays. I wasnt sure how big of a deal it was, and my brother was helping me install them and said i should just go ahead and start it and see how it sounded. Well i started it, it ran fine. I took it for a test drive really slowly. It was sputtering some so i shut it off right away. My question is, is the reason its sputtering some because that cap broke off? OR Is it because i need to increase the fuel flow through them? Im about to put my turbo set up on my car. And i have a fuel pump im yet to install. I also have a Apexi AFC-II installed. So any help on that would be great. Thanks alot.
12-06-2003, 09:10 PM
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The pintile cap is in place basically to protect the pintile. As long as the pintile itself isnt damaged, you should be fine.
I personally would send them to cruzin performance and get them cleaned and have the pintile caps replaced if I knew one was broken off, to be on the safe side. An injector is NOT something that you want to fail, obviously, especially under boost.
I personally would send them to cruzin performance and get them cleaned and have the pintile caps replaced if I knew one was broken off, to be on the safe side. An injector is NOT something that you want to fail, obviously, especially under boost.
12-08-2003, 07:04 AM
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Actually you are a 91...which I believe has a resistor box stock.
I believe you have to play with the AFC a bit to get the injectors to drive properly. Try -35-40 across the table, see what happens.
I believe you have to play with the AFC a bit to get the injectors to drive properly. Try -35-40 across the table, see what happens.
12-08-2003, 01:42 PM
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Ok well i changed everything across the board to - 40 and it doesnt sputter anymore. But now it almost seems to hesitate a little when i shift. seems like its not got as much throttle response. Could that be because im running too rich since the turbo isnt on yet to use the extra fuel?