hondahater

iTrader: (2)

Well I guess what I'm wondering is what percentage do I have to subract these 720 primaries, to make them the same as the 550's so this doesn't happen again. I fired the car up yesterday and it kept dying then I found out I forgot to connect the afm anyways I fired it up today and was going good until I stopped giving it gas. It idled on it's own for about 5 to 10 seconds and then died. I then tried to start it again and it wouldn't start, even with my foot all the way down (rtek 1.7). I'm guessing it's flooded pretty bad. I'm going to wait a while before I start it up to see what happens. I found a leak comming from the turbo so I have to make new gaskets and tighten some things and then after about 3 or 4 hours I'll try to start her back up. Anyways just let me know, thanks.

kd86rx7

iTrader: (1)

i have 720 secs and rtek 1.7 it doesnt flood.

eric.

hondahater

iTrader: (2)

720cc primaries

hondahater

iTrader: (2)

oh yeah, doh I have an safc that I am tuning with, thanks.

jon88se

Hmmm - this may be a PITA issue because I think the ECU uses SET cranking "maps" and won't recognize changes in the SAFC while cranking. I'm betting that 95% people running larger primaries are using a standalone.

hondahater

iTrader: (2)

yeah I think your right. I've heard reted say he had this problem however there are a bunch that said it never made their car flood. Now here is the thing. I don't think it is flooding on startup because like I said before it started just fine but then flooded afterwards. I'm thinking its just really ritch at idle. If I can get it running again I'll just see what my wideband says and change it from there.

YearsOfDecay

Not only does it have a "primer" map.. the ECU also enrichens the fuel for a few seconds after startup AND it has a temperature map that puts in more fuel while the engine is cold.....

Put the 550's back in..... or get a standalone....... or an additinal injector controller.. (best option if you want to keep the stock ECU and run mad boost)

hondahater

iTrader: (2)

damn! well I know there are other people with bnr stage III's with larger primaries running off the stock ecu and an safc?

Rxmfn7

iTrader: (4)

Try someting in the middle, maybe 680cc, or even smaller if you can find them. This is the exact reason I opted to go with a Greddy E-manage over a S-AFC. It can be used as an AIC also, so I will be running stock 550s in primary, 720 secondaries ( Rtek 1.7), and then an addional 1 or 2 550s controlled by the E-manage.

ScrappyDoo

iTrader: (7)

Hondahater, if you end up pulling the 720's let me know I was about to order a set from Rx7store. Should've taken my haltech when you had the chance.

RotaryEvolution

iTrader: (30)

you can lean out the idle map with the safc some to try and get it to idle, it's not like you are boosting and are chancing running it lean and detonating. adjusting the 1k rpm LO throttle setting would give you a starting point for the adjustment process.

if they wind up not working for you and you need your 550cc primaries back i am looking for some 720s in the near future so maybe we could do some sort of trade. lemme know if they work out or not, i'm a bit poor atm but i might be able to dig up some cash.

RETed

(new) - (old)
----------------
(new)

SO...

(720 - 550) / 550 = ~24%

So you need to decrease it by about -24%.
Try -20% first...


-Ted

hondahater

iTrader: (2)

thanks guys! I'll deffinatley keep you in mined karak and lawyers spirit! Reted that is exactly what I needed. THanks again man! I would just hate to give up my 720's and not have enough fuel for this stage III turbo.

stv

what exactly is a stage 3 turbo :|

RotaryEvolution

iTrader: (30)

stage 3 BNR probably i would think.

hondahater

iTrader: (2)

yeah what karak said. I cleaned the spark plugs and got the car running. I did the first data logging with my wideband however there is some leaks around the turbo so I gotta find out where it is comming from and why my downpipe isn't screwing all the way on to the turbo even though I can't turn it any more than it is but after that it will be time to test drive and tune Thanks again guys for the help.

gsracer

I've run 4 x 720's for a year now on the e-manage with absolutely no flooding.

- new greddy (nippo) injectors
- original motor going on 80k miles

Matt

hondahater

iTrader: (2)

Man I'm really close to getting an emanage. I might just sell my safc and get one. how hard was it to setup?

hondahater

iTrader: (2)

can the emanage change the cranking fuel map or not?

jon88se

Nope - still a piggyback. You really shouldn't need larger primaries for your setup. Try a larger secondary than the 720 if you need more fuel and use the SAFC accordingly.

You may also want to try an adjustable fuel pressure regulator that bumps the pressure up under boost. It's an old school method and fairly crude, but it works if done properly.

hondahater

iTrader: (2)

hum....interesting I just calculated the combo of 550/890 and at 80% duty cycle it would support the exact same amount of hp that a 720/720 combo would support.............something to think about here...........hum.....I may just put some 550's back in. What to do, what to do.

gsracer

If your motor has good compression and the injectors do not leak flooding should not be an issue. Keep the larger primaries, with the new hybrid you will be able to flow plenty of air before the secondaries come online. Even with the lowered secondary activation point of the rtek you will still be able to hit full boost on the highway while in 5th before they come online.

The emanage is very easy to set up. If you can install the safc, you can put in an e-manage, it's only a few more wires to solder.