Redrotor

my engine O ring went out.
so I'm building stret port engine my self.

I just wnt to know how much fuel I have to add.
I know I need dyno tune but I don't want to put fresh engine on the dyno.
BTW I'm using PFS PMS if someone can post map I would raelly appreciate it.
my mod is intake DP catback.

thanks

DavidDeco

Take a look at some of the maps of streetported engines on the PowerFC forum and you will note the trends. I did this by looking at all of them and isolating what was incommon for Streetport, 1300 injectors, HKS Ignition, etc. If I find my old notes, I'll post the trends I saw with the streetport- I just don't remember off hand.

artguy

you can not get a proper answer to this question.

everyones streetports are slightly different...depends on how much you port it...among other things.

your best bet is to get the datalogit and a wideband...that is the only way to do it right. it is not worth the risk any other way.

i tuned mine myself at first with a butt dyno...just drove around and added and took fuel out as it felt off....you can get it fairly close. and you MUST be very patient.

i managed to get my afrs in the 10-13 range like that...however you need to be at 11.2 all the way across (leaner at vacuum). which i used a DIY wideband and the datalogit to do.

you cant ask someone how much fuel to add to hit 11.2 afrs. you need a wideband. period


i tried sending my ecu to xs TWICE (they nearly blew my new motor and turbos and ceramic seals with their horseshit maps)....then sent my maps and datalogs to kdr rotary and got the same results.

it is simply impossible to get it right without a dyno or a wideband and the datalogit.

good luck


jason

ps..trust me on this...ive been there.

DavidDeco

yeah, I should have mentioned that I used the trends from others maps as my starting point but I have a WB and Datalogit which was used to clean it from there.

'Minor' oversight

Redrotor

Yes I know I need dyno tune..
but I wnt to drive around with low boost for break in.
I just want to know how much more fuel over stock would be safe.10% more or 5% just need clue.

BTW I used template from Bruce (rebuilding Video guy)
I guess it's mild street port.
and I highly recommand this guy his service was super with good price.

thanks.