HELP! troubles with my ka-t. Was running perfect not even a week ago and nowthis

[DevilMB3017]

I'm running 370cc's and a stock MAF on a tune by EFI Specialist. It was $305 and in my opinion, worth every penny for it.

Re-tunes are only 50 bucks for it, so when you upgrade you don't have shell out a bunch of cash for a new tune.

Glad to start seeing real-world feedback from EFI Specialists.

Also, I'd like to note that Enthalpy is a damn good and very well respected Nissan tuner, and his tunes are $500 flat rate, with no costs for re-tunes.

[neverlift]

hmm

now try to install the injectors and afc again, to see if they were the problem or if the no filter was the issue. I dont think the chances of you getting 2 sets of bad injectors is that likely. I am trying to pick some up today myself.

also on the neo do you have the two grounds about an inch apart? like the older afc (if they wire the same?)

I like my afc, I am only using it for removal of fuel for now, but it has helped me diagnose a power issue I was getting 10.3 volts max on the afc, car was failing all over the place, turns out I had a plug come half undone..I am hitting 63% airflow on my n60maf too 7.5psi...they are very useful,even when not in use for tuning.

[DevilMB3017]

ran the maf in front of the turbo, and put a filter in front.connected the iacv to the charge pipe.

Hopefully you did this before the injectors/AFC swap... I'd say put the AFC back in and see what happens. Leave everything zero'd out. If it works okay, drop the injectors back in and see what happens...

[h-eater240]

Modified by h-eater240 at 7:56 PM 11/28/2009

[neverlift]

hye if you get it running thats one more kat, and thats better than one more sr swap

yes IIRC it is very important to have them in diff locations. Why escapes me but its in the manual.

you should stick around, we are the best we can diag your broken kat over the net.

[h-eater240]

Modified by h-eater240 at 7:55 PM 11/28/2009

[neverlift]

loved my ssqv, but the rs is sexier now I have it, reminds me of the agp I lost in the crash , sounded super charged cruising.

no dont even try to install the injectors without the neo installed and set to -25%ish , stock ecu cannot handle that much extra fuel., You could decrease fuel pressure 27% and try that, but I wouldnt....

do you have a wideband installed? if the answer is no, then dont drive the car!

[h-eater240]

Modified by h-eater240 at 7:56 PM 11/28/2009

[neverlift]

at least have a adjustable fpr crunk to 60psi, at keep the boost under 3psi but still its iffy without a wideband...

[1mansho]

running rough and overfueling i say its your maf man... make a new piping for the maf and have it at least 12 inches away from the compressor the way you have it is just rediculous lol

[WDRacing]

Install a 8:1 FMU and retard the base timing just a little. Why install all the other crap when it's not good for anymore boost and can't be tuned any better then a FMU?

Why anyone uses a AFC and 370's anymore is beyond me. They have never been as good as the FMU. The FMU has been a solid fuel management option since the earl 90's. The AFC twists airflow signals and alters timing maps. At best it should be used to fine tune a generic ROM tune.

Sell the AFC and the 370's, buy/install the FMU and you'll be happy.

WD

[h-eater240]

Modified by h-eater240 at 7:58 PM 11/28/2009

[WDRacing]

They are like $125...

[Doya]

Someone is selling a used 8:1 Blox FMU in the classifieds for $65.

[neverlift]

look around I see them on craigslist for 20 bux, and not the ebay s***, vortech. I love mine its simple and works.

hey wd what about 550~600cc and the afc?

[WDRacing]

SAFC doesn't retard timing. Why would you need injectors that big without any way to control timing?

The SAFC is a not something I'd recommend to anyone. Buy a EFI Specialists Rom tune for like $350, controls timing and fuel and can compensate correctly for whatever MAF you choose. Non of this guessing which settings work best crap.

Low boost = FMUHigh boost = Rom Tune or Standalone

WD

[h-eater240]

Modified by h-eater240 at 7:58 PM 11/28/2009

[trackslut240]

aw man, u cant give up on 240s... come on..i got mine running, it was fouled plugs... put in a set of bosch platinums and it fired right up. running perfect smooth. compression is at 175-180 across the board. idles at 14.7, havent got on it yet coz the turbo i had, a t25 bought 2 and some eons ago, is toast i think. i do see smoke, white smoke, enough to kill mosquitoes for a couple blocks. i will also check the return line, i do have a restrictor on it. i bought it so long ago and i think it was fine then, just sitting on the shelf and then suddenly being awakened might have killed the puppy.

do i rebuild this t25 or go to the t28? or maybe just find another cheap t25 which is good. not lookin for crazy power. it was a hell of a ride...but it was mostly coz of my half a**ing, i think i have the lower timing chain off, coz i did do a major cleanup. mostly half a**... .. put new rings in, new head gasket, arp head studs. will be ordering the timing chain and oil pump soon. runs fine, no probs. oil pressure sits at 35-40 after fully warm.

neverlift wd and all of you out there thanks for the helps and ideas.will keep u guys posted, maybe its time for me to start a new thread.I AM NOT GIVING UP ON THE 240...

good luck with the sale rick.

Fawaaz

[h-eater240]

Modified by h-eater240 at 7:59 PM 11/28/2009

[neverlift]

well its hard to "blow" the seals. If you get the return worked out and have a restrictor in place you should be good, I was smokin gdue to a bad anlge on the return and once it was fixed I had no more smoke

[trackslut240]

it took me four years to accumulate the parts, all shi**y parts, two weeks to put it together(i am old and disoriented(spell check)) then two months to just figure out that my plugs had fouled.i totally forgot, that once u douse the plugs in fuel and keep dousing them, u toast the plugs. i did that 15 years ago on a 70cc bike and then bought a pack of plugs, coz i was still young dumb..and full of..sh*t... i am glad i didnt tow it to a friends lot to store. my uncle was breathing down on my neck to move the car, then he saw me working on it overnights.. and he said its cool take your time, u drove it in here u r driving it out.

i will check that neverlift, i am sure its that return. maybe angle it better. will post pics. thanks guys

[h-eater240]

Modified by h-eater240 at 8:00 PM 11/28/2009

[trackslut240]

do u have a restrictor? if yes what size? if no...why not?

on the t25 i had a .062 or something, it didnt fit so i got one of the honda ones which a nearby tuner shop uses and it fit fine. it is smaller than the .062 from jgs which i had.

damn return line....

[h-eater240]

Modified by h-eater240 at 8:00 PM 11/28/2009

[WDRacing]

If I were you man, I'd keep that S14. I had all kinds of issues, popped a motor and was close to selling. I moved 3 times since then and I towed it every time. Almost a full 4 years later I'm getting off the bench and my S14 is still waiting for me.

There are lots of options man, make a new thread and I'll talk you into keeping her. Whatever your next goal is I'll help out from the start, we all will.

The s-chassis is an awesome platform, you have the last year it was built.

WD

[Doya]

haha, no restrictor, but i'm dead set on trying that out. everyone is telling me....."Bro you don't need one with a journal bearing, we don't ever use one" but i knew deep down it was a good idea, i'll see how it works out

Yeah man, don't give up on it. I've gone through so much s*** the past couple of weeks but I'm not going to give up. I know it will be well worth it once I get everything up and running

[neverlift]

giving up is like failing, not an option, I am old too, thats a lame excuse. I have severe spine issues and I manage to pull my a** out of bed everyday and keep on going.

I was in a car totaling crash 2 months ago, got a chassis donated 2 weeks later, and rebuilt a car in another 2 weeks, pretty much single handed.

dood, never lift

[h-eater240]

]
Modified by h-eater240 at 8:01 PM 11/28/2009

[h-eater240]

Modified by h-eater240 at 8:02 PM 11/28/2009

[neverlift]

I dont dream, I make reality truth is I was done, had no money to replace the car or anything, someone donate the BARE chassis to me, and I quickly went to town thanks to a neighbor calling the city, it was supposed to be a slow build and everything was supposed to get more attention than it did.

just plug away man, eventually it will come around. I am still half alseep but isnt your turbo new or newish?