Mikey

sit back...grab a brew and some popcorn here is my story:

new engine:
pineapple 3mm large street port
1600 miles

Turbo:
stock twins converted to full nonsequential
did the nonsequential to prep for the single turbo install which is coming in next week.
i believe all the hoses are connected right, but i can't say for sure...i haven't boosted with only 1600 miles on the engine.

Computer:
PFC with datalogic

story:
in preping for the single turbo install, i am installing the new fuel system. right now my fuel pump is the walbro 255 which is going to be changed to my Rx7.com pump as soon as the engine's not flooded. i just installed new primary 550cc injectors. these were purchased from the forum store under the nippondenso 550cc stock replacements. the injectors that came in came in a blitz box...they are 550cc injectos, so i assume the nippondenso injectos are blitz injectors? i DID NOT install any resistors in series with these injectors...should i have? one of the stock connectors for the primary injectors broke, so i replaced it with one of the connectors that came with the new injectors. i only did this with one of the new injectors and used the stock connector for the other one. should i have used both new connectors? the stock one snapped right on.

for the secondary injectors, i bought the forum stores FD3S fuel rail with included bosch 1600cc injectors (note if anybody is going to purchase this, make sure you buy the connectors for the bosch injectors from somewhere...they DONT come with the kit). i soldered 20W 10ohm resistors to the connectors to make them a high impedence injector. Then i went to my datalogic and changed the settings of the injectors to:
Pri frt 100% +0.04
Sec frt -- +0.12
Pri Rr 100% +0.04
Sec Rr -- +0.12

Inj Size Primary 550cc
Inj Size Secondary 1600cc

Pri/sec transition 40%
Sec mmsc 1.112

for the fuel temp sensor, i took out the sensor from the stock frul rail and left it hanging in the engine bay connected to the wire harness. (so the computer still sees it, but isn't taking the temp of the fuel) i then went to the datalogic and made these changes for the fuel temp sensor:

60 1.00
40 1.00
20 1.00

For the FPR i have the 35-90psi sx regulator. i have a NOS fuel pressure gauge plugged into the front of it. i have the out of the secondary fuel rail going into the side of the FPR. i have the bottom of the FPR running to the gas tank. i have the vacuum line for the FPR coming from one of the manifolds nipples (does it really matter which one?) i pulled the vacuum line off the FPR and started the car. i then tuned the FPR to 40psi. then i connected the vacuum line to the FPR and tie pressure dropped to about 35psi i guess (don't really remember, it just dropped like it should).

so why doesn't my car run right? when i turn it over, it is REALLY REALLY bogged down. the longer i leave it at high idle (2500rpm) the cleaner it starts to sound. if i leave it at 2500-3000 for about 5 to 10 minutes i am able to take my foot off the gas and let it idle at 1000. after about 3 minutes of sitting at idle, it starts to bog down and suddenly dies! when i try to start it right after it dies, it wont...it is too flooded. if i let it sit for about 10 minutes, i can go back out and start it right up. but as soon as i try to let it idle it kills itself with too much fuel. i get dyno tuned next week at rx7.com and need to be able to drive my car about 400 miles to get there. i have done everything i can to make it run, but i can't get it. somebody PLEASE help me...ANY idea will be awesome. i am all out of them!!!!!!

TYSON

A couple of things. Normally your car will idle at 30 psi fuel pressure, so you will be rich from that.

Also, why did you change the lag time correction value on the primary injectors if they are a stock replacement? When I put secondary injectors in my primary rail I had to change it, you should not. When playing with that value on my car, I found that by reducing it my car would idle cleaner. You may be rich from this as well, though you seem to be VERY rich and these are relatively small things. Try them first though.

Where did you get the value for the secondary injectors, too?

Mikey

okay i will lower the pressure and try that. also, i tried it first w/out changing the lag time and it did the same thing. the only reason i did it was because i found this post https://www.rx7club.com/forum/showth...r&pagenumber=2 go down to what spoolin said, i guess dave at kdr says to do this if you DONT use the resistor. so i just did both. that is the only reason i put that in. i am doing anything i can to get it to run! so what all do you want me to change in the resistor screen?

THANKS!,
mike

TYSON

You don't put the resistor on the primaries, that is only when you put a low impedance injector in the secondaries. You put the resistor in line with the secondary injectors only. I have no idea why they would change the primary value when you are using stock primary injectors.
My car had 0 problems even though I used 850 cc injectors in the primary spot. I changed the setting to accomodate and drove away. When I put on my Aeromotive pressure regulator I could idle @ 1000 RPM with the fuel pressure set @ 40 psi, even. It was grossly rich and smoky, but it would run on it's own.

Mikey

sometimes i really want to sell my car for $1.00

TYSON

I have a dollar!

Trout2

iTrader: (5)

What kind of vaccum do you see at idle? Did everything operate completely normal before this change?

The Blitz injectors are Nippondenso. There should be no change in lag time for them since there are the same as stock.

Check the workshop manual but 35 psi sounds a little high at idle.

TYSON

One other thing. With all these new injectors, are you absolutely certain they are seated properly? If they are allowing fuel to leak past the lower o-ring on the primaries you would have big problems.

Mikey

Trout2: everything was perfect before this change. i can't tell you the vaccum because i can't get the car to idle...but i would love to know. i just undid everything looking for vaccum leaks but can't find any. but something did happen today!!!...reading that the powerfc turns on the secondaries at 50% duty...i reved for a while up and down and was able to make the car not bog! idle was perfect again...but this only lasted less than a minute and the car killed itself..(i guess this is when the primaries took full control).

Tyson: i pulled off the primary injector rail again and checked the o-rings. they looked fine. i then didn't put the rail back into the block and ran the pump to test for leaks...but nothing leaked up to 40psi. i guess maybe i seated the injectors a little better when checking the o-rings?

well, im off to test some other crap

spoolage

iTrader: (2)

i did the full non-seq conversion liek this on my car.


blocked off the acv and whatever else that DONT BE A RIKKI thread said.. just followed the diagram, my engine idled really rough for about 5 seconds then died, couldent get it to start after that.. Im almost posotive I did it all correctly, I was trying to get the car to turn over when I saw gas come splat on my windsheild, I bend over to take a look and see what the hell was leaking and bubbles were coming from the FPD.... it was wet all around, soooo what did i do? heh I just pulled my engien and Im starting all over from scratch, gona rebuild the engine anyways since its compleatly stock w/ 98,000 miles...

whats weird, is I did the half job of dont be a rikki, the web site version and my car ran well, but when I do the full job it stops working..... hmmm, I think it has somthing to do with running the FPR straight to the LIM nipple !?!?

oh well, my car wont be up for a while so let the posts come

Mikey

well, i called pineapple about the FPR. he said that if you are using the stock FPR use the solinoid for the FPR and if you go aftermarket FPR don't use the solinoid and go straight to the nipple. but i can't prove that...my car doesn't work yet

Dougie_fresh_007

here is an idea. check ur o2 sensor voltage, and then check ur map sensor and then go to the point on ur injector map where the map sensor says u are and lean it out till u get 0.8 volts or higher for ur o2 sensor, thatz whut i did, mind u it fluxuates around on ur map sensor but u can lean alot of ur idles out... email me ur injector map and ill take a look at it if ya want

Mikey

that would be great...i'll get them to you asap. thank you!

edit: i can't find your email. so i just uploaded them.

Dougie_fresh_007

its in a .dat file.... my comp is gay mmk... do u have it in an excell spreadsheet? oh and my email is dougie_fresh_007@hotmail.com .... now the world knows

Dougie_fresh_007

mmk well i made popcorn like ya said. actually it sounded good lol..... im lookin at ur maps. and it does look pretty rich at idle.... in fact its the same numbers i had when i had ur same problem.... my numbers for the idle area which is colom 2 area or 800 rpm is actually less than 1. its 0.97 or sumthin maybe a little higher the 1 is 100% of the stock fuel enrichment correct people... which means im runnin a little leaner at idle than u do stock... u have a map adding 20 % more fuel than stock at idle and u should idle somewhere in between colum2 and row 3-5 for idle... i cant remember i think i idle at row4 or 5.. newayz u seem to have a really rich idle... check ur o2 sensor voltage and i bet its around 0.03 which means ur runnin real rich... lean that whole area on the map out to like 1 or sumthin.... but make sure u keep checkin where ur map sensor sayz u are so u know which area to lean out..... tell me how it goes... oh and as long as u can gett it runnin u should be ok. sometimes u might wanna let it run at a high idle jus to make sure it wont flood.

Mikey

thanks a lot! i'm on it. as soon as it stops raining i'll go hook it back up and give it a shot. thanks again.

Mikey

thanks a lot! i'm on it. as soon as it stops raining i'll go hook it back up and give it a shot. thanks again.

Dougie_fresh_007

i hope it workz for ya.... my timing jus went off the ****** wall the other night durin an 17 psi run....??? i dont know how... i jus figured out that that wuz the problem.... if i only had dataloggit lol