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Semp1
Well-Known Member
It stays on based on the heat of the engine and outside temp I believe. Totally normal operation. Don’t think about it. Ask your speed shop if you’re that concerned. But it’s normal.
Torinate
Well-Known Member
Not concerned one bit. Runs like a champ...
Just was something that I found odd and wondered what others were experiencing.
The temp thing makes sense though. I wonder how it knows though... I guess the way it’s tied into the electronics. I wonder if there’s a breakdown of when it stays on and for how long or when it turns off when the car turns off.
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Torinate
Well-Known Member
Interesting!
So when I fill up before going home the pump won’t stay on. But if I’m low it will.
I’m going to text that theory in the spring if it ever comes.
Is this your experience or what you know is true?
Thanks for that!!
brianbr
Well-Known Member
When the tank is full there is less room for vapor so the purge valve doesn't stay powered up as long. The opposite happens with an empty tank.
If you look on the left side of the engine under the cover there is the purge valve for the evap system. The Edelbrock system uses a jumper harness from there to supply signal to the pump relay.
The duration the pump stays on is based on tank level and possibly ambient temp?
I have tested it.
Torinate
Well-Known Member
Thank you for the explanation!
Makes sense now if it’s taking power from the evap system and the evap is programmed to run that way, the pump will as well.
So inconsistent is normal lol.
Never been concerned with it and figured there was some explanation. So when I saw a few posts about pumps staying on etc, it reminded me to ask...
Now we all know. Just reinforced a non-problem that I don’t have lol.
bhvnce
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Hey guys quick question, not sure if this has already been asked before but I just don’t have it in me to read through 123 pages of this thread lol. Are there any options for CAI other than the edelbrock one that HAS TO be paired with their thousand dollar throttle body? My goal isn’t huge power here I just want to get a little more umph out of her and hear the whine a little bit more. Mostly the whine though so any suggestions would be awesome. Thanks all!
brianbr
Well-Known Member
I don't believe there are any other options. The whine mod is available but is gimmicky. You won't hear just the cool blower sounds but all the other annoying sucking swooshing noises also.
If you are handy, buy a spare stock upper lid a cut the box off as far away from the maf sensor as you can Get some silicone hose and aluminum piping and try to make your own. I thought about trying it with mine but the stock 18+ airbox works great at keeping intake temps down and it makes all the power I need.
If you are handy, buy a spare stock upper lid a cut the box off as far away from the maf sensor as you can Get some silicone hose and aluminum piping and try to make your own. I thought about trying it with mine but the stock 18+ airbox works great at keeping intake temps down and it makes all the power I need.
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illtal
Well-Known Member
I think you can do a PMAS open element thing. Problem is whether the tuner can or will tune for it or not. Just ask them. The 103mm can make over 1000 with enough boost. Personally I prefer the closed inlet airbox, but out can open the top if you want. There is more intake noise especially when the car is cold at low RPM, but if you wanna hear the whine you need more boost.
Eulisess550
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Stock or Edelbrock one? If Edelbrock, I’ll take it.
