a_reyes1014

iTrader: (1)

well its in matrix mode i thought that rpm cruise and wot were disabled in this mode. but i did have it at 1000,1500,2000 rpm 11,12,11.

a_reyes1014

iTrader: (1)

i set those to zero and there really was no difference in low rpm maps. it still runs a little rough down low. i will have someone drive it tomorrow so i can really see whats going on while driving it. also cruising around im getting high 10 to mid 11 afrs. whats a good number to keep it at.

a_reyes1014

iTrader: (1)

i had the rpmcrs 1000-11,1500-12,2000-11. im tuning in matrix mode and thought that rpmcrs and rpmwot were disabled in matrix.

a_reyes1014

iTrader: (1)

ok rx72c heres what i got. the first vacuum nipple that i found that reads vacuum apparently doesnt read boost. so eveytime i go into boost it reads 00"hg. every port on either side of the manifold reads either boost or vacuum and not the other. when i changed it back to the port i had it on last year when boost came it ran hard but cruising was pig rich. i couldnt lean it as out as it would buck and not let me rev the car past 1500 rpm. so i figure i need the a port the reads both vacuum and boost. also to let you know i have a s5 uim with a s4 lim. im not sure if ports read different on these.

rx72c

iTrader: (8)

The port on the turbo side of the engine coming off the top half manifold reads vaccum and boost.
Are you using a afr meter to tune?
How do you know its pig rich?
when a car bucks and dosnt rev its too lean.

a_reyes1014

iTrader: (1)

thanks rx72c i changed it to that port and im boosting and driving like a normal rx7 should. it pulls nice with only 8 lbs. i am tuning with a wideband it was 10.0 while cruising but after i changed vacuum ports i tuned it a little bit and its around mid 12s to low 13s cruising and boosting its around mid 10s. also after i dial in the fuel how do i go about tuning timing? i do have a egt gauge to help with that.

rx72c

iTrader: (8)

EGT guage per rotor is ideal for getting your timing right.

a_reyes1014

iTrader: (1)

hey rx72c back again. i know uggg. lol. ok i got the cruising around 13.5 to 14.3 which is good enough for me. now my thing is on the boost side. it seems like it leans out up top at around 6500 rpm to 7000. now i know i have enough open time for the injectors up top. its at around 4.86ms with the 4 1000cc rc injectors and only 8lbs from what the datalog is showing. theres the datalog. now my question is for my fuel setup. i have two filters in the system. one before the pump which is a summitflow 100 micron and one after the pump which is a stock 2nd gen filter. i have my pressure set at 43lbs and it has a walbro 255lph pump. now this is in a 1st gen so i had to put a sump kit on the stock gas tank. does that sound like enough for what i have for now?

BluRR

iTrader: (1)

How do you know you have enough injector open time? 4.86ms is far from max opening time. I would suggest richen it some more by giving it more opening time in those lean areas and see what you get.

rx72c

iTrader: (8)

have you added some more fuel in your MATRIX map at those rpms?

a_reyes1014

iTrader: (1)

i will try it. i will be back and let you guys know what happens

a_reyes1014

iTrader: (1)

well i just did what you guys told me to do and its running really good. afrs are at 10.9 to 11.5. now i have another question lol. i know too many questions. i have the wastegate vacuum hose connected to the second from the top port on the firewall side. i noticed it hit 16 lbs. and i let off. wasnt sure if the wastegate was seeing boost so i ask if there is another port on firewall side that sees boost

rx72c

iTrader: (8)

The wastegate should be connected to either your turbo front cover(most people tap a nipple in their) OR drivers side intercooler pipe.
Other wise boost will be much higher then what the spring would normally allow.

a_reyes1014

iTrader: (1)

ok thanks rx72c i will change it tomorrow. i have no intercooler it runs straight to the manifold. would anywhere on that part of the piping be fine say right before the throttle body opening?

rx72c

iTrader: (8)

yes thats fine. Closer to the turbo the better.

BluRR

iTrader: (1)

No intercooler? what kinda setup you running? water/alky injection? E85?

a_reyes1014

iTrader: (1)

water/alky injection

a_reyes1014

iTrader: (1)

hey rx72c and the rest of you guys i wanna say thanks for all the help the car is running decent now with maybe a few areas i have to check. if it wasn't for your help i think i would still be stuck thanks guys now its track time after everything else ges worked out.

rx72c

iTrader: (8)

Good stuff mate.
happy to hear a good ending.

a_reyes1014

iTrader: (1)

ok rx72c i have a quick question. i know again. im up to 7.0ms at 14psi up around 5500rpm and its leaning out. are my 1000cc too small or should i keep tuning it for more?

rx72c

iTrader: (8)

What fuel pump do you have?

a_reyes1014

iTrader: (1)

a walbro fuel pump with two filters. a summitflow 100micron before it and a stock rx7 efi fuel filter. the tank is sumped as all this is on a 1st gen carbed car.

rx72c

iTrader: (8)

It sounds like a combination of both injectors and fuel pump shitting them selves.

Its pointing more the fuel pump.

7.0ms at 5500rpm isnt near 100%.

Get a surge tank.
put a 044 pump.

And go from their.
pm me if you need the above.

a_reyes1014

iTrader: (1)

i was leaning toward the pump. first the rc injectors are brand new. second the pump is whining really loud and i remember when i first got the pump it was really quiet. now it sounds like an aeromotive or weldon pump. i did notice that when the voltage drops to like 12.5 the motor almost stalls like the pump is not keeping up with.

rx72c

iTrader: (8)

Why is your voltage dropping.
the walbro wont keep up.