PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

when to install injectors

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Old Sep 8, 2010 | 11:18 AM
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2000RDT/A's Avatar
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Default when to install injectors

hey im having heads and cam installed and purchased the ford svo red tops. ive been told obviously not to install them till i get it tuned. im getting a mail order base tune in the next week or so. as long as i include this in my list of mods will it be ok to install them or wait for a final tune? thanks
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Old Sep 8, 2010 | 12:38 PM
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If the mail-order tune is including the new injectors, you should be fine.
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Old Sep 9, 2010 | 06:23 PM
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you should have 28.8 injectors stock, and they are good for an easy 450 rwhp. i made over 440 rwhp on 26.5 injectors , which were only put in 99 cars,all other years were 28.8s so i wouldnt think they would even be needed unless you have a blower or some crazy 500+hp heads cam package. personally....i would send em back and save my money, because you wont make more power with injectors unless yours are just dirty old high mileage injectors
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Old Sep 9, 2010 | 06:30 PM
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If you are doing heads and cam, you will need injectors... if they are in the mail order base tune, put them in when you put the tune in...
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Old Sep 9, 2010 | 06:39 PM
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The unwritten rules of thumb is to go with larger injectors if you are over 80% duty cycle at WOT.
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Old Sep 10, 2010 | 06:24 AM
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Stock injectors also max around 400 rwhp and I wouldn't push my engine to 450 with stock injectors.

Put them in when you have the PCM with the correct data installed.
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Old Sep 11, 2010 | 10:52 AM
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yeah thats what i figured. i know i could run the car with the stockers but they be maxed out and probly wash my cylinders out. just wanted to make sure they were cool to put in with the base tune. thanks guys
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