bmwrx7man

iTrader: (2)

well as some people may know i had problems with the car getting hot on highway in my other thread but thats all set now , new problem is i had a coupler on the turbo to IC piping that kept popping off all this time . when it was on it had a rip in it . today i fixed it new coupler and t bolt clamps . turn the boost up to 13psi no boost leaks at all now . aem reads nice and rich . now after 20 mins of putting the new coupler on pulls nice n even . i goto supermarket come back out start the car up . start to leave and the car has AN INSANE POWER INCREASE . complete diffrent car it stayed that way till i got home . the boost was still at 13 psi even . putting me back in my seat it wasnt doing that 20 mins ago . so i dont know wat else to look at i feel its some sort of sensor . my mods are

rebuilt s4 t2 ra super seals etc .
bnr stg4 turbo
rtek 1.8 4x720 cc injectors
walbro 255
aem wideband
full strait 3"
front mount
new ngk plugs
changed the oil last week 20-50w
act clutch etc other little stuff

. so the car has a mind of its own pulls really hard now . im gonna take it back out for a drive in 2hrs see if it stays the same . but it never ever felt like that even after i fixed the boost leak . just after i started it up 20 mins after i fixed the boost leak . were should i start looking? and my last question i had to relocate my coil pack cause IC piping is in the way , does that need to be grounded?

bmwrx7man

iTrader: (2)

edit that and the fuel pump has been rewired

rx7_FREAKKK

iTrader: (1)

Power INCREASE? or Decrease?

bmwrx7man

iTrader: (2)

increase , i havnt messed with the timing or anything its in the middle were its suppose to be

rx7_FREAKKK

iTrader: (1)

Sticky secondary port acuator? I thought you were complaining on a Power loss? So now im confused.. If it has power now. Just leave it alone

bmwrx7man

iTrader: (2)

but it didnt pull that hard 20 mins after i fixed the coupler . it was after 20 mins of me shutting the car off togo to supermarket that it started pulling hard . and im low on gas might have something todo with it?

bmwrx7man

iTrader: (2)

im going to get gas now let see if it still pulls the same

OutCold

grammar.......

bmwrx7man

iTrader: (2)

sorry i type fast . and i just went to go get gas . went back to being normal i guess u can say , so maybe its running to rich ? afr are at 11.5 ish at WOT on 12-13 psi steady

rx7_FREAKKK

iTrader: (1)

Could be anything. Loose junk in the catalitic converter, I have had the same issue with my car to be honest.. When i first got my car it got 11mpg. no power. then i upped it to 18-19. And have had tons of power since. Well for an NA BUT You have a TURBO. . i dont think they have 6 ports.

Could be a sensor OR you have bad coil to the Trailing plugs. make sure both coils are firing, the car will have boring power if the coil packs are not working to its full power

bmwrx7man

iTrader: (2)

ima change the plugs again and ground out the coils . everything else is connected and in working order tps i adjusted 3 weeks ago

bmwrx7man

iTrader: (2)

i grounded the coil , set the ignition timing to 0 with the marks under the cap like it suppose to be . feels better afrs still low 11s . 16psi now but now im lean at idle lol . before it was 12-13 at idle when it got warm now im at 15-16 idles jumping around to i gotta re set the idle for the 100x time . but theres no more weird up and down power lost from 4k all the way till 7k anymore . so im guessing everything is good

bmwrx7man

iTrader: (2)

did notice it pulls harder when its low on gas . so does any 1 have an idea why?

wthdidusay82

iTrader: (15)

maybe it's running more hp because it's running more where it should be on less gas ? more lean or something, i dont know

but i wouldnt think running low on gas is a good thing, as if you run out and fuel cut that wouldn't be a good thing

sounds like you need someone to tune it, i wouldn't know anyone there that tunes rx7s , but i do know there is a place near east providence that has a dyno that you could goto.

check the grounds , tps, etc. make sure everything is working and adjusted the way it should be, basically just look over everything and recheck everything u can, could be something stupid

my brothers going to be going there with his sr20det swapped 240sx , its got about 280 hp or so he says

bmwrx7man

iTrader: (2)

the grounds are litterally new when i put the motor in the first time . all the sensors are working order . i think i have a small vacmm leak now cause the lean idle was at 12-13 at idle now its jumping around at 15-17 at idle thats not a big deal . like i said underboost its fine the afrs atleast . but when it was low on gas the first time it pulled realllly hard the afrs were high . makes no sense to me . should i turn down the boost? its pulling like bat outa hell now at 16psi steady . but it felt faster that one time yesterday . still cant belive how fast it was going lol

bmwrx7man

iTrader: (2)

and yes i been tring to dyno it . closes cheap accurate dyno is in fallriver . so i have togo this week

wthdidusay82

iTrader: (15)

Goodluck bro, you do remember who i am don't you ? I had the red n/a and was living in Rhode Island for a while

The place i know is having a dyno day a bunch of people are going to, it'd cool if you went and showed some rotary power down there. It might even be closer to where you are, i believe its a mustang dyno

http://www.facebook.com/Dynotech

I've been there once, seen a skyline pull around 500 hp to the wheels

bmwrx7man

iTrader: (2)

yea i remember u dude . and today i did find the dumbest vacumm leak fixed that now the AFRS are at 13 at idle like it was suppose to be . i smelled a little bit of fuel earlier i had to take the top half of the manifold and change a clamp cause it was leaking gas out of the return line . all fixed . but i think theres still something up with the power band idk . if people are making 300whp on 13 psi on a bnr stg 4 i feel like im not even close to that . so lets see if i can get a dyno pull out of it today or tommarow . but like i said my AFRS are steady 11s at WOT

AGreen

iTrader: (11)

11.5 is pretty safe for that pressure at WOT. You could go leaner safely, which would gain more power. If running low on gas gains you power, then what's probably happening is it's leaning out as the fuel pump sock gets uncovered. Don't risk that again though, and don't try to lean it out too much just for power, that's how you blow stuff up.

sharingan 19

iTrader: (16)

For better or worse there isn't any "adjusting" to be done on an rtek 1.8 save for of course tricking it w/ larger injectors.

If you aren't above 300whp there is a pretty serious problem w/your setup. Stage 4's commonly dyno between 310-320 @ 12psi, so if youre running 16psi you should be well above 300 especially if its holding boost to redline @ 11.5 afr.

Get on the dyno and prove yourself wrong, lol.

bmwrx7man

iTrader: (2)

thanks guys we will go from there . im confused on why it pulls soo damm hard when it was low on gas i had to hold on to steering wheel both hands wasnt ready for that lol . bnut i turned it down to 14psi today pulls pretty good took it up to 140 so ill come back with dyno results lol

walken

iTrader: (6)

get a aftermarket FPR. that ecu isn't enough to run a stage 4 safely. many of the members on here will say their car was running so great just before the engine popped.

wthdidusay82

iTrader: (15)

if what he's saying is correct then that's not good , why would this ecu not be enough ? stage 4 is pretty heavy hp , i'd say you should potentially run 11's-12's with that turbo

bmwrx7man

iTrader: (2)

well its runs good so idk lol

wthdidusay82

iTrader: (15)

how much boost is your version rtek capable of handling ?