no boost after 4k... i think. - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

mixedwell · 06-21-2006, 01:11 AM

hey guys it me again. ok ok so finally i found time to get my ride running again. everything seems fine and idle is stable at 700-800. at idle, my car will have no problem revving up to 7k and the turbo will spool nicely. when in gear the car will only rev to 4k and i barely feel the boost. when i shift its the same thing. the car bucks after 4.5k and i feel that it wants to keep going but cant. and the fastest i got the car to go was 55 mph. haha. i need help.

96 blacktop s13 SR20DET
t25 (stock) nice turbo, not blown, little oil in the hotpipe
bosch platnium tip plugs (i need NGKs huh?)
stock injects
FMIC, no leaks found.

please help!

-mixedwell

ps- i have a hookup at nissan. if yall need a part let me know. thanks.

s14slide · 06-21-2006, 04:05 AM

almost sounds like your ecu is in limp mode. Also check your plugs, check the color, gap them and reset your ecu. See what happens and hit us back.

Slidin240Wayz · 06-21-2006, 06:27 AM

Tighten your clamps, you might have a boost leak.

koukidough · 06-21-2006, 12:40 PM

Quote:

Originally Posted by Slidin240Wayz

Tighten your clamps, you might have a boost leak.

+1 boost leak

*Sil-Abc* · 06-22-2006, 02:33 AM

sounds like the gasket between the exh mani and turbo inlet. this has happened to me ....3 times by now? its a common problem so umm have fun dealing with that

mixedwell · 06-22-2006, 05:45 AM

thanks guys.. ok so i dorve the car and it feels better. got some bucking still and still not much boost but when driving and switching gears i can feel the car makking some sort of power. its like the higher the gear, the better the car feels.

hmm... i'll check what yoou guys told me too. thanks again.

mixedwell · 06-22-2006, 05:47 AM

oh yeah, i cant check what code is on the ecu too. this newer one i got has no light. good thing the check engine light isnt on. ill check if it on limp mode.

S13Eye · 06-22-2006, 07:24 AM

Does it sputter and cut out when it loses power?

drifter808 · 06-22-2006, 09:54 AM

could be the plugs. i heard bosch's really suck. get some NGK's in there.

Slidin240Wayz · 06-22-2006, 10:32 AM

bkr6e's all the way

mixedwell · 06-22-2006, 03:42 PM

sometimes the car sputters and dies but for the most part its cool. imma check on Everything today. i'll keep yall posted. thanks.

-mixedwell

mixedwell · 06-22-2006, 09:59 PM

ok.... thanks for all your advice. so this is the deal:

the car runs... ok. idle is stable and boost seems to be building. there still are some issues after 4.5k rpms like the car starts to buck after that range. when the car is moving, and im shifting gears, boost seems to be building, but at higer gears only. first and second gears kick hard, but only till 4.5 rpms and then bucking occurs. i set the ecu mode thing (next to the ecu light) all the way to the right and the car started running nicer. i dont think i have any boost leaks, but im gonna redo the piping just to make sure. i also think the ecu wasnt used to my setup and was still learning from it. after all, this is a different ecu than what my motor originally came with.

gotta love blacktops and E5's. ill keep ya posted. thanks.
BTW- i installed all the links in the back and thr RUCAs. soon, ill have my joy back. thanks again.

-mixedwell

drifter808 · 06-22-2006, 11:33 PM

Im really thinking its the plugs. i had the same problem when i first had my SR. i put new plugs thinking Bosch's was all hot shit and they got eaten up quick.i mean like one run quick.Same problems though, bucking higher up in the rpms and crappy idle and driveability but they were also the wrong heat range but i didn't know. put in NGK BKR7E and problem was gone. bought like 12 of them last time so i always got replacements.

06-21-2006, 01:11 AM	#1
mixedwell Zilvia Addict Join Date: Sep 2002 Location: SOuth Cali Posts: 892 Trader Rating: (0) Feedback Score: 0 reviews	no boost after 4k... i think. hey guys it me again. ok ok so finally i found time to get my ride running again. everything seems fine and idle is stable at 700-800. at idle, my car will have no problem revving up to 7k and the turbo will spool nicely. when in gear the car will only rev to 4k and i barely feel the boost. when i shift its the same thing. the car bucks after 4.5k and i feel that it wants to keep going but cant. and the fastest i got the car to go was 55 mph. haha. i need help. 96 blacktop s13 SR20DET t25 (stock) nice turbo, not blown, little oil in the hotpipe bosch platnium tip plugs (i need NGKs huh?) stock injects FMIC, no leaks found. please help! -mixedwell ps- i have a hookup at nissan. if yall need a part let me know. thanks. __________________ silvia... my love ::

06-21-2006, 04:05 AM	#2
s14slide Zilvia Addict Join Date: Sep 2002 Location: Nippon Age: 43 Posts: 630 Trader Rating: (0) Feedback Score: 0 reviews	almost sounds like your ecu is in limp mode. Also check your plugs, check the color, gap them and reset your ecu. See what happens and hit us back. __________________ = My day

06-22-2006, 02:33 AM	#5
Sil-Abc Premium Member Join Date: Jul 2003 Location: Downtown LA Age: 39 Posts: 2,549 Trader Rating: (13) Rides Gallery: Sil-Abc Feedback Score: 13 reviews	sounds like the gasket between the exh mani and turbo inlet. this has happened to me ....3 times by now? its a common problem so umm have fun dealing with that __________________ IM JON WAYNE ESQ.... bitch

06-22-2006, 05:45 AM	#6
mixedwell Zilvia Addict Join Date: Sep 2002 Location: SOuth Cali Posts: 892 Trader Rating: (0) Feedback Score: 0 reviews	thanks guys.. ok so i dorve the car and it feels better. got some bucking still and still not much boost but when driving and switching gears i can feel the car makking some sort of power. its like the higher the gear, the better the car feels. hmm... i'll check what yoou guys told me too. thanks again. __________________ silvia... my love ::

06-22-2006, 05:47 AM	#7
mixedwell Zilvia Addict Join Date: Sep 2002 Location: SOuth Cali Posts: 892 Trader Rating: (0) Feedback Score: 0 reviews	oh yeah, i cant check what code is on the ecu too. this newer one i got has no light. good thing the check engine light isnt on. ill check if it on limp mode. __________________ silvia... my love ::

06-21-2006, 06:27 AM	#3
Slidin240Wayz Post Whore! Join Date: Jan 2005 Location: Everywhere Age: 40 Posts: 5,427 Trader Rating: (9) Feedback Score: 9 reviews	Tighten your clamps, you might have a boost leak.

06-22-2006, 07:24 AM	#8
S13Eye Zilvia Member Join Date: Feb 2006 Location: Los Angeles Age: 40 Posts: 190 Trader Rating: (0) Feedback Score: 0 reviews	Does it sputter and cut out when it loses power?

06-22-2006, 09:54 AM	#9
drifter808 Zilvia Addict Join Date: Aug 2005 Location: Big Island Age: 36 Posts: 829 Trader Rating: (4) Rides Gallery: drifter808 Feedback Score: 4 reviews	could be the plugs. i heard bosch's really suck. get some NGK's in there. __________________

06-22-2006, 10:32 AM	#10
Slidin240Wayz Post Whore! Join Date: Jan 2005 Location: Everywhere Age: 40 Posts: 5,427 Trader Rating: (9) Feedback Score: 9 reviews	bkr6e's all the way

06-22-2006, 03:42 PM	#11
mixedwell Zilvia Addict Join Date: Sep 2002 Location: SOuth Cali Posts: 892 Trader Rating: (0) Feedback Score: 0 reviews	sometimes the car sputters and dies but for the most part its cool. imma check on Everything today. i'll keep yall posted. thanks. -mixedwell __________________ silvia... my love ::

06-22-2006, 09:59 PM	#12
mixedwell Zilvia Addict Join Date: Sep 2002 Location: SOuth Cali Posts: 892 Trader Rating: (0) Feedback Score: 0 reviews	ok.... thanks for all your advice. so this is the deal: the car runs... ok. idle is stable and boost seems to be building. there still are some issues after 4.5k rpms like the car starts to buck after that range. when the car is moving, and im shifting gears, boost seems to be building, but at higer gears only. first and second gears kick hard, but only till 4.5 rpms and then bucking occurs. i set the ecu mode thing (next to the ecu light) all the way to the right and the car started running nicer. i dont think i have any boost leaks, but im gonna redo the piping just to make sure. i also think the ecu wasnt used to my setup and was still learning from it. after all, this is a different ecu than what my motor originally came with. gotta love blacktops and E5's. ill keep ya posted. thanks. BTW- i installed all the links in the back and thr RUCAs. soon, ill have my joy back. thanks again. -mixedwell __________________ silvia... my love ::

06-22-2006, 11:33 PM	#13
drifter808 Zilvia Addict Join Date: Aug 2005 Location: Big Island Age: 36 Posts: 829 Trader Rating: (4) Rides Gallery: drifter808 Feedback Score: 4 reviews	Im really thinking its the plugs. i had the same problem when i first had my SR. i put new plugs thinking Bosch's was all hot shit and they got eaten up quick.i mean like one run quick.Same problems though, bucking higher up in the rpms and crappy idle and driveability but they were also the wrong heat range but i didn't know. put in NGK BKR7E and problem was gone. bought like 12 of them last time so i always got replacements. __________________

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