ok so i have a b20 vtec with type r pistons etc basically i got the car to idle on a stock p30 ecu and stock b series injectors now if i give it throttle it kinda lobes and gets a little choky if i rev it to 4k it will clear up then shut off . has anyone had this problem? does it just need to get dyno'd the gears are set to 0,0 as of now lmk guys thanks in advance. basically this is the first start up of the day it starts then i give it a little throttle and it does what you see...second video is like the third try of starting it and no i wasnt giving it gas

http://youtu.be/XqjZIojvpYw



http://youtu.be/ODpKBn3Co2Y

 

video added

 

I have another vid where it lobes a lot I can add later if needed

 

you need to adjust t-stop...mines idles at 1000 like stock...took some playing around with t-stop

 

Throttle stop?

 

you need to get the damn thing tuned

 

To be honest I wanna be 100% that all it needs is a tune.... Cause I have to rent a trailer and drive like 100 miles round trip prob more Im trying to make it to where I don't get shut down cause of another issue at the dyno cause thats like almost 1000$ for trailer fee gas dyno etc ya know so that's y I ask If u guys here think that's all I need to fix this:-)

 

Lol sry for all the ?

 

its still needs a tune with those cams....at least have the idle tuned...

 

Boy this got redundant. hahahah

https://honda-tech.com/forums/all-motor-naturally-aspirated-44/help-degreeing-buddy-club-spec-iv-cams-2997859/

https://honda-tech.com/forums/all-motor-naturally-aspirated-44/buddy-club-spec-iv-cam-datasheet-needed-2041098/

 

I know right nvr had this many issues b4 it's crazy

 

your never gonna have it running right without a tune...my cams were degreed and still ran like **** 1st start...my tuner had to play with airfuel and throttle stop to get it right..

 

Ok I gotcha well guess I'll just do that.. Did your car do somewhat mine does in the vid? And thanks agin for the info hopefully soon I'll be posting up dyno sheets :-)

 

mines would'nt stay on unless i reved it...

 

When I opened this first thing I saw was the Bisi header and though..."problem #1" But in all seriousness you're going to need bigger injectors for that thing to be tuned properly. I say this because there are different sets of "stock b series injectors" because the D series uses the same ones. Most D/B injectors are 240CC, but Y7s and D15B8s are only 180CC, D15Z1 VX injectors are supposed to be 190CC. This same thing happened to me when I built my current motor. Started it on a stock basemap with what I thought were stock injectors for B series and they were "small" ones and had the same problem as you. This was just a basic GSR build too. You didnt list what cams you have but a B20V with any significant mods (besides I/H/E) is going to be at the peak of duty cycle on stockers...and probably won't get you the numbers you are hoping. I would go at least 440's

 

OP stated in the title BC IV cams

 

Some times I wanna slap myself. I looked past the title because 95% of them are HELP!!!! and that's it with no specifics. Anyways cams or not that setup it going to starve for fuel.

 

if your dead set on making it idle before tuning.
try unhooking/plugging the vacuum line to your FPR
that'll bump the pressure back to base pressure, enrichening the mixture some. combining with turning your dizzy some to find the timing that the engine likes to idle on and raising idle with your throttle stop/air screw. you can tune idle almost to perfection by that...

oke the rest of everything will be off, but you can atleast have it idling warming up and checking for leaks and bleed the coolant system.

then when you set off to your tuner set the base timing back at 16degr and revert all alterations.

 

Ya most parts Wer put on to make sure the car runs I have Rc 370 for
It as well