N/A S14 SR (TO) Turbo revs to 4.6k and falls on face.. fuel cut HELP!

[E7-S14]

my setupS14 N/A SR20DE+T t258psi at 2500-3000in 3rd gear revs to 4.6k and falls flat on faceafr shoots to 16:1 or something.

im running SAFC 2370cc injectorsstock S14 N/A SR fuel pumpS14 SRde Mafsretard 5 degrees from base timingngk bkr7e plugsgapped at .035

swapped in a s13 SR20det Maf and it did the same thingevery single time it hits 4.6 and fuel cuts

any idea whats going on??

been stumped all day on this.running SAFC 2.

Please help!

[boro drift]

Did you have the ecu rom tuned?

[E7-S14]

Stock ECU with SAFC 2

[boro drift]

I pretty sure you need a tune, also. There's a guy in town here with a KA-T, and he has a rom tune with the safc. My guess would be that the stock ecu is seeing something it doesn't like, and is saying,"f*** it!".

[E7-S14]

so your saying i need a rom tune?

what places or who can tune an S14 N/A SR Ecu for boost?i don't know much about rom tunes. and don't know who to go to. for it.

i thought the safc would be able to handle it on 8lbs.ive heard of guys running KA-ts off afc's and not having a problem like this.

any other ideas?

[boro drift]

If I were you, I would contact Jim Wolf Technologies directly and ask them. If anyone knows, it's those guys.

[E7-S14]

Seishuku! i need your HELP HERE!

[E7-S14]

If I were you, I would contact Jim Wolf Technologies directly and ask them. If anyone knows, it's those guys.

JWT doesn't support N/A SR+T ecus. unless they do secretly.it says they dont on there website

[boro drift]

I just checked Enthalpy's site, and they have a tune for the DE (turbo).

http://www.rs-enthalpy.com/ecu.htm

edit- Whoops! I read that wrong, it said KA-T s14, sorry.
Modified by boro drift at 6:42 PM 6/3/2009

[E7-S14]

yeah for the KA24DE (turbo)

i may go Nistune.. but i need a car and i dont have the extra cash to drop on that now..

[boro drift]

Is there anyone else on NICO with a SR20 DE+T?

[E7-S14]

yeah Seishuku does. in his corolla.S14 N/A SR+T just like mine

wishing he'd chime in.

were on the last stretch of my turbo build only to get caught up with this crap.

[boro drift]

I hope you get it dialed bro. Sorry that I wasn't much help.

Good luck!

[Seishuku]

It's not a Corolla...

As far as I know, you can't do a proper turbo setup with just the SAFC.I wouldn't want to anyway, not when you're dealing with boost and 10:1 compression.

I can help you with the ROM tune, but I'm not really sure on modifying the ECU for a daughter board for the ROM chips. I understand how it works and all, but you really need to contact Calum Johnson ([email protected]), he can help you figure out the hardware part.

Now, if you really want to do it with out a ROM tune, and I still don't really recommend this either, but with an MSD boost timing master (BTM) and an 8:1 rising rate fuel pressure regulator (RRFPR or FMU). I know a few KA+T guys do this is fairly decent success, but it will only get you so far.

But don't keep driving it like that for sure, you'll melt a hole in a piston.

[E7-S14]

we figured it outthere was a leak somewhere and some setting on the afc was off.

made 180 on 7lbs.i need-walrboro 255 fuel pump-Nistune ECU.-FMIC..

then ill be happy.i cant run the safc for long i know.

[Seishuku]

I guess as long as the AFRs are at least 11:1 when in boost, you should be ok. I would keep an eye on the timing though.

Hook up a laptop and do some consult logs, if you can. Graph out the timing curve, make sure it's not putting too much timing in when under pressure.

Here's my timing map for reference:

Just keep in mind that I don't know what that map would do with out water injection to keep pinging away.

[E7-S14]

im running a little lean up top.as im still running stock fuel pump. but that should be fixed

i think now im running 12:1 for the most part.then leans out a tad on top end.

i cant mess wth timing until I get nistune