Okay this is got me stump so here I go. I have a 94 vx civic with a JDM h22 swap okay the ecu is a p13 chipped with JUN . The car came with B series injectors in the motor and I changed them out and put the h22 injectors in it. Now the car want hit Vtec it runs fine until it hits 5000 and then it boggs. I have resistor box wired up . Changed out MAP sensor . Only thing I can think of is the ecu I dont know I have tried everything so any help will be nice. Thanks

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by spoonzdelsol &raquo;</TD></TR><TR><TD CLASS="quote">Okay this is got me stump so here I go. I have a 94 vx civic with a JDM h22 swap okay the ecu is a p13 chipped with JUN . The car came with B series injectors in the motor and I changed them out and put the h22 injectors in it. Now the car want hit Vtec it runs fine until it hits 5000 and then it boggs. I have resistor box wired up . Changed out MAP sensor . Only thing I can think of is the ecu I dont know I have tried everything so any help will be nice. Thanks </TD></TR></TABLE>

Any CELs? Have you tried resseting the ECU? Sounds like the ECU went into Limp Mode.

 

No CEL car runs really good with the h22 injectors just when I go to hit Vtec it Boggs .
But with the B series Injectors it ideals bad but hits Vtec everytime .

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by spoonzdelsol &raquo;</TD></TR><TR><TD CLASS="quote">No CEL car runs really good with the h22 injectors just when I go to hit Vtec it Boggs .
But with the B series Injectors it ideals bad but hits Vtec everytime .</TD></TR></TABLE>

So you bought this car with the swap, it had a Jun chipped P13 and B16 injectors? Dont know much about ECU chipping, but maybe the chip requires the B16 injectors. See if you cant borrow a stock ECU and try the H injectors again. Also check the engine timing maybe its off too much and releasing to much fuel from the H injectors causing the bog.


Good luck.

 

Thanks I think the ECU has something to do with it but I am having no luck in finding a H22 ecu . I have already check the timing its fine Thanks for the help

 

Yea i would say try messing with ignition timing to match the fuel

 

The impedence on B series and H series injectors are different, that's most likely the problem. If the ECU was chipped for the B series, high impedence injectors, it is going to run differently if you hook the H series injectors up along with the resistor box. That's the reason it's bogging when VTEC engages.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Specail Ed &raquo;</TD></TR><TR><TD CLASS="quote">The impedence on B series and H series injectors are different, that's most likely the problem. If the ECU was chipped for the B series, high impedence injectors, it is going to run differently if you hook the H series injectors up along with the resistor box. That's the reason it's bogging when VTEC engages.</TD></TR></TABLE>

Since its a JUN chip, i doubt its chipped for b series injectors, but I agree that the resistor box is the problem (if you don't have one already).

 

is ur speedometer working? did you correctly connect a ground to your vtec?

 

everything is hooked up right No CEL or anything like that Car hits Vtec fine with b series injectors . It runs better with the H22 injectors but when you go over 5000 it boggs really bad I think it has something to do with the ECU but I dont know anything about Chipped ECU's