is it possible? how can i get more fuel out of my injectors w/o chipping my ecu? the reason im asking is because i did a kinda gay swap(d15z1 block + y8 head) and i think it could possible "KICK" more if i had more fuel while my vtec is kicking? possible? any ideas?

 

It's not the best of ideas.. a good idea is too sell it and get a more powerful engine, or just bash on the thing. As for adding more fuel and running rich.. Calibrate your TPS sensor so that your ecu beleives your car needs more fuel than it already does, pretty much - put the sensor on WRONG. Oh yeh, maybe buy a 8$ "Moo-gen" chip off of ebay

 

what do you mean by pitting it on wrong?(tps) oh **** their only 8? but how are they installed? im running my stock PM6

 

if you calibrate the TPS wrong your car will run like *** and you'll throw a CHECK ENGINE LIGHT... sound like fun? just leave the fuel alone... if u add to much fuel your call can feel slower.... u have to mess with ignition timing as well so its pointless unless you're getting it tuned... you'll throw off the air/fuel mixture and wear your motor down faster... too much fuel will spray onto your cylinder walls and wash away the oil and cause the metal of your pistons and rings to break down faster until one day ur back to catching the bus....

 

well if you had the right ecu and wired vtec properly your engine would run a lot better. you cant just dump fuel and expect it to run better. it doesn't work that way. do you understand the concept of an air/fuel ratio

 

I'm pretty sure your tps is calibrated to make your engine perform correctly (or you have to calibrate it correctly yourself), not too lean, not too rich. Play around and see where it takes you.

As for the ecu chip, i'm assuming you have a Po7 ecu?

i was just looking through ebay garbage and found this.. but for b-series motors.

http://cgi.ebay.com/ebaymotors/M-GEN...1%7C240%3A1318

I still wouldn't do it, new motor = more power, more power = more fun

 

ahh yeah i do understand air fuel ratio 14 lbs of air to 1 pond of gas? i think idk. that was two classes ago^_^ well cuz i posted this cuz it sounds/feels like the car is sucks alot of air and not enough of gas. but maybe that just the swap i did **** it

 

No Tune= No Life mang! Chip the ecu if 90-91 PM6,and have it tuned correctly.U'll be glad ya did...

 

or he could just get the right sohc vtec ecu, i.e. a p28. and then an obd0 to obd1 jumper with subharness which gives you the connections you need for vtec solenoid, vtec press. switch, and 4 wire o2. since you don't have a vtec ecu i'm going to guess you just have an rpm activated switch hooked up your vtec solenoid. thats another reason why it's not going to be faster. when a vtec ecu tells vtec to engage the fuel maps and trims change accordingly. by engaging the vtec solenoid with a switch while utilizing a non-vtec ecu, all you're accomplishing is making a bunch of noise, but you won't be making any more power.

http://rywire.com/store/8891-crxcivi...c5a0f3d003009c

^that would be me assuming you either have an hf/si chassis, or if you have a dx/std chassis that you've converted it to mpfi. i would hope you didn't bolt a dpfi intake to the y8 head

 

exactly you got it. i have everything stocak from my 90 si si i guess im ****ing up by not swapping my ecu i guess ima have a project for this weekend thanks guys

 

one wire vtec is a myth anyways... its useless!
unless you buy the right ecu and have all your wiring correct, you'll never get it right.
ive tried many " mini me's and they all sucked!
these guys are right about not messing with it. If i were you id put the stock si head back on and throw away that obd-2 y8 head, and do not worrie about vtec,
my SOHC ( non vtec ) ZC smokes 99% single cam vtecs and most b16's with just mild parts and a good stock pm6 ecu

 

hmmm.. so many opinions.. what to do what to do what to do either way i still take out ef si's by 3-4 cars so i must be doing something right

 

wanting to randomly dump more fuel into an engine for no good reason is hardly doing something right. why dont you want to get your ecu chipped? people will do it for like 45 bucks and then there are places you can give them all your specs and "mods" and they will burn you a baseline chip. that would be way better than what you were asking to do. Save up some money for a street or dyno tune

 

money is not a problem i just dont know how to go about doing all that ****

 

thats really not necessary to do all that. as i said in post #9 a p28 will run your car just fine.

 

and what car is that ecu from?

 

92-95 civic ex/si with the sohc vtec d16z6

 

kool ima try to score one then

what can i do about my rad fan not turning on?