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Under normal driving conditions, only the factory pump fuels the engine. This means that the fuel isn't being heated by the large external pump.
Only under boost does the big pump kick in, almost tripling the available fuel output.
The stock fuel rail is utilized and the factory covers fit right on.
A nice stainless steel bracket mounts our adjustable regulator to the brake booster.
All lines and fittings come pre assembled for easy installation.
No cutting of any factory lines is necessary. Our braided lines snap right on to the factory lines and fuel rail.
A hotwire kit runs power straight from the alternator to the pump.
The relay is triggered by a boost activated switch. The relay and wire harness is also pre assembled.
There are 3 versions available:
1997-1998
1999- 2002
2003-present
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Andy, looks like I have another option. How much RWHP will this support? I'm at 700rwhp w/ racetronix and Kenne bell BAP set on Max!! cost?? The scatter shield works wonders by the way!! Thanks for getting it out so quick the other day when Mike from G force gave ya a buzz!!
In a few recent threads there were complaints about pressure spikes when the secondary pump activates (other kits). Does yours do that? If not, how was that eliminated?
On a 97 - 02 system there isn't much of a spike because the regulator is working with both pumps. The regulator is fairly large and absorbs the hit.
On an 03 and up, the stock pump is regulated at the tank.
That means that you only have about 58 PSI at the rail, no matter what you set the regulator at.
If you set the regulator at 58 PSI, it doesn't spike. If you set is at 70 and boost reference it, then it will spike. You just have to tune for it as best you can.
I'd rather haver a little rich spot at midrange than run out of fuel up top.
Here's a graph of a car with the system installed. The pump kicked in down at about 3000 RPM or so. No big dip in power when the pump kicks.
The system will be $1100 complete.
Last edited by Andy@A&ACorvette; Jun 15, 2007 at 07:04 PM.
With this setup - mine made 700rwhp with not a single bit of fuel issues 2 weeks ago, i just ran out of pulley - a 4.5" on my F1 wasnt enough - meth didnt make a single HP difference and that was also on 91, so i cant wait to get one more shot at the rollers with another 5-7lbs of boost
But you can be assured that i'm going to get my damn 800+ goal with some more air!
In a few recent threads there were complaints about pressure spikes when the secondary pump activates (other kits). Does yours do that? If not, how was that eliminated?
To answer your question back to back with andy there isnt a pressure spike, but there is a volume spike when the pump kicks in, which can be minimized with the proper tune
The system looks very nice and I am sure performs well my only concern would be a fire hazard from the shraeder valve area since that area is very weak and prone to cracking. I think the added stres of the hose and line overtime will stress it I have seen many of these crack just from fuel pressure sending units, if you reinforced that area on a exchange basis it would be much safer otherwise great idea.
Under normal driving conditions, only the factory pump fuels the engine. This means that the fuel isn't being heated by the large external pump.
Only under boost does the big pump kick in, almost tripling the available fuel output.
The stock fuel rail is utilized and the factory covers fit right on.
A nice stainless steel bracket mounts our adjustable regulator to the brake booster.
All lines and fittings come pre assembled for easy installation.
No cutting of any factory lines is necessary. Our braided lines snap right on to the factory lines and fuel rail.
A hotwire kit runs power straight from the alternator to the pump.
The relay is triggered by a boost activated switch. The relay and wire harness is also pre assembled.
Where does the fuel feed for the second pump come from?