i have a 91 civic its a d15b dpfi with a pm5-a30 ecu.
does anyone know if the pm5-a30 wont let u pass 100mph?
is there any other ecu that i can use instead of the stock ecu?

how it all started

 

 

vtec motor?

 

does it even have enough power to go past 100mph?

 

This

 

why are you taking your civic past 100mph? stock civics brakes are under sized and stopping from that speed is not an instant thing any ways.

 

its non vtec, it wasnt holding compression and it would over heat and wouldn't pass 80 but i changes head gasket and piston rings and drove around for a while to beak them in 2months later went up to 100 no problem but it just stops at 100mph. the engine is healthy. think might be the ecu not letting me pass 100. the breaks work fine when going 100 .

 

idthink is possible to use a mpfi in to a dpfi

 

Can't use a mpfi ecu on dpfi. At least from my experience but the pm5 probably has a cut off at a certain speed and yea I'm really surprised that thing went up to 100mph why wouldn't you just swap to mpfi it's cake and an I stand 20 hp

 

100mph on a dpfi ?? Why not just go multi port

 

what parts would i need for complete mpfi? what ecu witch intake manifold what sensors injectors and how to wire it together? can i use the obd0 harness or would i need another one?

 

yes 100mph on dpfi didnt know it could make it that fast it rides nice for having cut spring.

 

god there's so much fail in here. edit: deleted rant. not going there. o/p have fun killing yourself

 

FAILL

 

Look in the FAQs sticky.

 

im not sure if theres a limiter in the ecu or not. mine topped at about 107ish before my mpfi swap. with a 4spd standard model at that. not really interested in finding out how it will go now (bit older/wiser/self-preservation). mpfi is the way to go though if you plan on holding on to the car as a dd for a while. so much nicer to drive. either way, if theres a limiter in one ecu, its a safe bet that honda incorporated it all they're other ecus as well

 

i have the same ecu and mine got to 110

 

thanks for ur help maybe the engine doesnt have enough power to go past 100mph

 

 

 

took a couple of min to change all lights

 

random at carls jr