Can you drive without a tune? For a 408 stroker?
04-23-2007, 08:41 PM
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Can you drive without a tune? For a 408 stroker?
Im having trouble getting in contact about getting my pcm retuned for my 408. I am thinking if I can get it started on my current tune then get to a dyno I can have it dynotuned somewhere instead. It might be easier this way, so I can get her back on the road sooner.
-Lurius
-Lurius
04-23-2007, 08:57 PM
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It won't idle for ****. This I know! If the injectors are the same size it may idle enough to get it out of gear, but if not, you souldn't run it anymore than you must, meaning, check for leaks and thats it.
04-23-2007, 10:26 PM
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Dangit. Injectors will be upgraded and it is a 5.3L in there now. Well, we'll see what happens, i'll have to make a few phone calls.
-Lurius
-Lurius
04-23-2007, 11:34 PM
#6
Originally Posted by Lurius
Im having trouble getting in contact about getting my pcm retuned for my 408. I am thinking if I can get it started on my current tune then get to a dyno I can have it dynotuned somewhere instead. It might be easier this way, so I can get her back on the road sooner.
-Lurius
-Lurius
If you're still running the MAF, you can get by with the stock injectors without a problem, other than potentially having to two-foot it to keep it from dying at low-speed/idle. How far away is the dyno that you'd get to?
04-24-2007, 12:16 AM
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Originally Posted by dc_justin
What size injectors do you plan to go to? What are your new camshaft specs?
If you're still running the MAF, you can get by with the stock injectors without a problem, other than potentially having to two-foot it to keep it from dying at low-speed/idle. How far away is the dyno that you'd get to?
If you're still running the MAF, you can get by with the stock injectors without a problem, other than potentially having to two-foot it to keep it from dying at low-speed/idle. How far away is the dyno that you'd get to?
-Lurius
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04-24-2007, 12:58 AM
#8
Originally Posted by Lurius
The injectors are 8.1L injectors, I think 31lb? The dyno.. Unsure distance, I dont know any places that dynotune.
-Lurius
-Lurius
04-24-2007, 09:40 AM
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31lb injectors are too small for a 408
with my setup and using svo 42# ones they are at 73% duty cycle.
when you scale a svo 42 they are right around 49# injectors for ls1 psi.
you need to step up and buy some real injectors if you plan on making power
with my setup and using svo 42# ones they are at 73% duty cycle.
when you scale a svo 42 they are right around 49# injectors for ls1 psi.
you need to step up and buy some real injectors if you plan on making power
04-24-2007, 11:24 AM
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Originally Posted by Quik
31lb injectors are too small for a 408
with my setup and using svo 42# ones they are at 73% duty cycle.
when you scale a svo 42 they are right around 49# injectors for ls1 psi.
you need to step up and buy some real injectors if you plan on making power
with my setup and using svo 42# ones they are at 73% duty cycle.
when you scale a svo 42 they are right around 49# injectors for ls1 psi.
you need to step up and buy some real injectors if you plan on making power
-Lurius