A buddy of mine is boosting his H22 in his 97 4 door civic today, running a P28 w/uberdata, 550cc injectors, 8psi. His Walbro pump is going to be in tommorrow and we are wondering if the stock pump would be enough to keep up with the setup for a couple of test runs before the walbro is in?

And at what HP point does the stock feul pump definetly have to be replaced?

I've searched but haven't seen much good info.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jmac &raquo;</TD></TR><TR><TD CLASS="quote">A buddy of mine is boosting his H22 in his 97 4 door civic today, running a P28 w/uberdata, 550cc injectors, 8psi. His Walbro pump is going to be in tommorrow and we are wondering if the stock pump would be enough to keep up with the setup for a couple of test runs before the walbro is in?

And at what HP point does the stock feul pump definetly have to be replaced?

I've searched but haven't seen much good info.</TD></TR></TABLE>

The civic or H22? I've been running with my stock F22 pump which is probably similar to the H22 pump up to 10PSI with no problem. Walbro's going in when I raise max boost though.

If you insist on "test runs", make sure you have a wideband in there to monitor AFR

 

yeah i mean the civic fuel pump. If it can't handle it he going to just wait for the walbro, then it going for dyno tuning.