SR HELP PLZ!!! running really rough - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

nxpoweredsr20 · 02-15-2008, 01:08 PM

i just got my sr20 tuned by enthlpy w/ 550 injectors z32 maf ,etc. It is really smokey and idles kind of rough......when accellerating its rough until the trubo spools up then it is better.......could it be vacuum lines or what? any help is good......thanks alot

Z U L8R · 02-15-2008, 08:31 PM

could be a vacuum leak....

did you wire in the z32 maf correctly, post up how u wired it in (there are lots of incorrect z32 maf pinouts on the internet)

do you have an safc2? if you do, change back your safc2 from 2 in 6 out to 6 in 6 out since your ecu is now tuned for the maf.

gl,
Dave =]

nxpoweredsr20 · 02-16-2008, 07:30 AM

no i dont have the safc or anything.....i used the heavy throttle diagram....im going to check for vacuum leaks and mess with the maf and check the wiring and such today and see what that does....i will post later and let you know........thanks alot......
ps....thats a nice ass car.....how did you get that thing to hook w/o street tires haha

nxpoweredsr20 · 02-16-2008, 09:54 AM

ok i moved the maf about 8 in away from the turbo and started it up and it is running alot better and it seems to just slowly get a little bit worse......i sprayed all the lines for boost and vacuum leaks and the motor never acted up.....when the car starts its fine and the exhaust gets slowly smoky and i cant figure out why?....im going to try new plugs and mess with the timing a little bit......

Steeles · 02-16-2008, 10:05 AM

iirc enthalpy does NOT ship the ECUs with the daughterboard in place. you have to install it when you get it back. if you did not then the ecu is still running stock program and with your upgrades it's going to run like shit. double check with enthalpy and I'm willing to be that is your problem. install the daughterboard.

Z U L8R · 02-16-2008, 10:15 AM

just checked heavy throttle, it has been fixed. instead of grounding 3 to the chassis, connect 3 to the ecu ground on 4 together, and see if it clears up.

Dave

nxpoweredsr20 · 02-16-2008, 10:48 AM

i just looked at my ecu and everything internally looks good.....i talked to jeff at heavy throttle and i think my smoking problem is because i have too much oil going to the turbol......im using a oil turbo only......i need to get my intake line to the turbo hard piped so there is less oil going to it ....i will check the maf wiring .......thanks for all the info.....

Steeles · 02-17-2008, 11:52 AM

Looks good but did you call enthalpy and make sure there was nothing YOU needed to hook up once the ECU was returned to you. as I said last time I checked they were shipped back WITHOUT the daughterboard hooked up. so if YOU didn't hook it up then your ECU is still running the stock program.

nxpoweredsr20 · 02-17-2008, 12:54 PM

ya on monday i will talk to jeff at heavy throttle bc enthlpy only has a email for contact info but im sure he will be able to talk to them.....im almost postivie my main problem is too much oil going to the turbo...i just have a hose that is tapped into the block and i need a much smaller stainless line.....thanks for the help

((sr)) kelly · 02-17-2008, 01:17 PM

Quote:

Originally Posted by nxpoweredsr20

i just looked at my ecu and everything internally looks good.....i talked to jeff at heavy throttle and i think my smoking problem is because i have too much oil going to the turbol......im using a oil turbo only......i need to get my intake line to the turbo hard piped so there is less oil going to it ....i will check the maf wiring .......thanks for all the info.....

too much oil going to your turbo?????

that makes no sense to me... how is the oil getting into your air tract if your turbo isnt blown.... or is your turbo blown?

take off your hot pipe and see if there is any oil in your I/C plumbing..

and here is a good way to see if its your maf... unplugg it.. and see if it idles alot better... and ive wired the Z32 mafs up before.. if it isnt wired properly, it wont go past 2500 rpms or around there

Steeles · 02-17-2008, 03:23 PM

what turbo are you running? do you have the correct size resistor in the oil line?

nxpoweredsr20 · 02-17-2008, 03:51 PM

im running a garret wet float....not bb.......that is my problem we just used a hose for the oil inlet instead of a small stainless line but i think atp turbo has everything i need....banjo adapter, -4 line and a -4 oil flange for the inlet....do i still need a restrictor on it?

((sr)) kelly · 02-17-2008, 08:17 PM

check your IC piping like i suggested

nxpoweredsr20 · 02-17-2008, 09:11 PM

ya i sprayed all the connections with starting fluid to see if it would act up and i didnt....thanks for all the suggestions guys!!

02-15-2008, 01:08 PM	#1
nxpoweredsr20 Zilvia Junkie Join Date: Feb 2008 Location: indianapolis, IN Age: 34 Posts: 352 Trader Rating: (10) Feedback Score: 10 reviews	SR HELP PLZ!!! running really rough i just got my sr20 tuned by enthlpy w/ 550 injectors z32 maf ,etc. It is really smokey and idles kind of rough......when accellerating its rough until the trubo spools up then it is better.......could it be vacuum lines or what? any help is good......thanks alot

02-15-2008, 08:31 PM	#2
Z U L8R Zilvia FREAK! Join Date: Jan 2007 Location: Georgia Age: 42 Posts: 1,194 Trader Rating: (0) Feedback Score: 0 reviews	could be a vacuum leak.... did you wire in the z32 maf correctly, post up how u wired it in (there are lots of incorrect z32 maf pinouts on the internet) do you have an safc2? if you do, change back your safc2 from 2 in 6 out to 6 in 6 out since your ecu is now tuned for the maf. gl, Dave =] __________________ RB25 280z GT30/76R 441hp/381tq 11.9@125

02-16-2008, 10:05 AM	#5
Steeles Post Whore! Join Date: Sep 2002 Location: 7th layer of hell, special pit of anger Age: 47 Posts: 3,785 Trader Rating: (0) Feedback Score: 0 reviews	iirc enthalpy does NOT ship the ECUs with the daughterboard in place. you have to install it when you get it back. if you did not then the ecu is still running stock program and with your upgrades it's going to run like shit. double check with enthalpy and I'm willing to be that is your problem. install the daughterboard. __________________ Keeping it Godzira bishes. So I murdered another turbo

02-16-2008, 10:15 AM	#6
Z U L8R Zilvia FREAK! Join Date: Jan 2007 Location: Georgia Age: 42 Posts: 1,194 Trader Rating: (0) Feedback Score: 0 reviews	just checked heavy throttle, it has been fixed. instead of grounding 3 to the chassis, connect 3 to the ecu ground on 4 together, and see if it clears up. Dave __________________ RB25 280z GT30/76R 441hp/381tq 11.9@125

02-17-2008, 11:52 AM	#8
Steeles Post Whore! Join Date: Sep 2002 Location: 7th layer of hell, special pit of anger Age: 47 Posts: 3,785 Trader Rating: (0) Feedback Score: 0 reviews	Looks good but did you call enthalpy and make sure there was nothing YOU needed to hook up once the ECU was returned to you. as I said last time I checked they were shipped back WITHOUT the daughterboard hooked up. so if YOU didn't hook it up then your ECU is still running the stock program. __________________ Keeping it Godzira bishes. So I murdered another turbo

02-16-2008, 07:30 AM	#3
nxpoweredsr20 Zilvia Junkie Join Date: Feb 2008 Location: indianapolis, IN Age: 34 Posts: 352 Trader Rating: (10) Feedback Score: 10 reviews	no i dont have the safc or anything.....i used the heavy throttle diagram....im going to check for vacuum leaks and mess with the maf and check the wiring and such today and see what that does....i will post later and let you know........thanks alot...... ps....thats a nice ass car.....how did you get that thing to hook w/o street tires haha

02-16-2008, 09:54 AM	#4
nxpoweredsr20 Zilvia Junkie Join Date: Feb 2008 Location: indianapolis, IN Age: 34 Posts: 352 Trader Rating: (10) Feedback Score: 10 reviews	ok i moved the maf about 8 in away from the turbo and started it up and it is running alot better and it seems to just slowly get a little bit worse......i sprayed all the lines for boost and vacuum leaks and the motor never acted up.....when the car starts its fine and the exhaust gets slowly smoky and i cant figure out why?....im going to try new plugs and mess with the timing a little bit......

02-16-2008, 10:48 AM	#7
nxpoweredsr20 Zilvia Junkie Join Date: Feb 2008 Location: indianapolis, IN Age: 34 Posts: 352 Trader Rating: (10) Feedback Score: 10 reviews	i just looked at my ecu and everything internally looks good.....i talked to jeff at heavy throttle and i think my smoking problem is because i have too much oil going to the turbol......im using a oil turbo only......i need to get my intake line to the turbo hard piped so there is less oil going to it ....i will check the maf wiring .......thanks for all the info.....

02-17-2008, 12:54 PM	#9
nxpoweredsr20 Zilvia Junkie Join Date: Feb 2008 Location: indianapolis, IN Age: 34 Posts: 352 Trader Rating: (10) Feedback Score: 10 reviews	ya on monday i will talk to jeff at heavy throttle bc enthlpy only has a email for contact info but im sure he will be able to talk to them.....im almost postivie my main problem is too much oil going to the turbo...i just have a hose that is tapped into the block and i need a much smaller stainless line.....thanks for the help

02-17-2008, 03:23 PM	#11
Steeles Post Whore! Join Date: Sep 2002 Location: 7th layer of hell, special pit of anger Age: 47 Posts: 3,785 Trader Rating: (0) Feedback Score: 0 reviews	what turbo are you running? do you have the correct size resistor in the oil line? __________________ Keeping it Godzira bishes. So I murdered another turbo

02-17-2008, 03:51 PM	#12
nxpoweredsr20 Zilvia Junkie Join Date: Feb 2008 Location: indianapolis, IN Age: 34 Posts: 352 Trader Rating: (10) Feedback Score: 10 reviews	im running a garret wet float....not bb.......that is my problem we just used a hose for the oil inlet instead of a small stainless line but i think atp turbo has everything i need....banjo adapter, -4 line and a -4 oil flange for the inlet....do i still need a restrictor on it?

02-17-2008, 08:17 PM	#13
((sr)) kelly BANNED Join Date: Jun 2007 Location: Zebulon... NC Posts: 1,035 Trader Rating: (6) Feedback Score: 6 reviews	check your IC piping like i suggested

02-17-2008, 09:11 PM	#14
nxpoweredsr20 Zilvia Junkie Join Date: Feb 2008 Location: indianapolis, IN Age: 34 Posts: 352 Trader Rating: (10) Feedback Score: 10 reviews	ya i sprayed all the connections with starting fluid to see if it would act up and i didnt....thanks for all the suggestions guys!!