Nistune problem on my ka-t - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

bonomo · 07-22-2014, 03:37 PM

Ok little on my set up s13 ka-t with
6262
id1000cc injectors
z32 maf

heres what happened last time i drove the car it ran good untill right at the last couple min then i jumped like a big miss . then i went to start it up the next day and i seen a fuel leak so i fixed that and i wanted to replace my fuel pump from a 255 to a 400 . after all that it starts up revs ok then after it warms up its revving high and its like hitting fuel cut at like 4000rpms. its weird i replaced my tps did nothing and it reads the right volts. thought it could be my maf but the volts are reading right on the nistune .
did a pressure check all is good. whats yalls thought on this? could i of messed up a setting in the tune? thanks ahead!

supersayianjim · 07-23-2014, 09:51 AM

did you try to re-load your tune?

Croustibat · 07-23-2014, 12:37 PM

Jump with a big miss, fuel leak ... i'd check pistons and spark plugs before worrying about the fuel pump ...

There is a very nice feature on nistune that allows you to compare 2 tunes. Load your stored tune in the second slot, read the current tune in the first, hit the compare button/checkbox/dropdown menu where you can (fuel and timing maps allow it), and you will see the differences.

bonomo · 07-23-2014, 07:42 PM

well here is the thing i accidentally uploaded and burned the the current tune on there right before this happened . and i dont remember what one i had on there cause it was a while ago!

supersayianjim · 07-24-2014, 01:42 PM

well kiddo you need to start from scratch then. consult the nistune support forums.

G-E@Z31P · 07-24-2014, 06:03 PM

Well as long as you didn't burn a new base image to the board, it should operate the ecu correctly, which means you just have to re-tune everything...

If you're really lost, start with the stock maps, resize injectors, change maf curve, then start tuning again (or pay someone)

bonomo · 07-24-2014, 07:59 PM

ok its weird i replaced the spark plugs the cap and rotor still the same . but if the cars cool it will not do it. The throttle response is bad though . like it i punch it it hesitates then revs. the a/f is great though at idle and when revving ! it seems like it would be the maf sensor but the volts are consistent with what the oem specs.

bonomo · 07-27-2014, 04:22 PM

anyone else? im trying to get on the nistune forum but i cant post yet!

bonomo · 09-01-2014, 08:15 PM

Anyone ? i bought a new tps car ran a little better but it still does the miss at 4k. and its running good a/f but the plugs are showing super rich!

07-22-2014, 03:37 PM	#1
bonomo Zilvia Member Join Date: Jan 2004 Location: Va Beach Posts: 234 Trader Rating: (1) Feedback Score: 1 reviews	Nistune problem on my ka-t Ok little on my set up s13 ka-t with 6262 id1000cc injectors z32 maf heres what happened last time i drove the car it ran good untill right at the last couple min then i jumped like a big miss . then i went to start it up the next day and i seen a fuel leak so i fixed that and i wanted to replace my fuel pump from a 255 to a 400 . after all that it starts up revs ok then after it warms up its revving high and its like hitting fuel cut at like 4000rpms. its weird i replaced my tps did nothing and it reads the right volts. thought it could be my maf but the volts are reading right on the nistune . did a pressure check all is good. whats yalls thought on this? could i of messed up a setting in the tune? thanks ahead!

07-23-2014, 09:51 AM	#2
supersayianjim Nissanaholic! Join Date: Jan 2010 Location: location X Posts: 1,815 Trader Rating: (10) Feedback Score: 10 reviews	did you try to re-load your tune? __________________ http://www.240sxforums.com/forums/rb...ject-s-rb.html

07-24-2014, 01:42 PM	#5
supersayianjim Nissanaholic! Join Date: Jan 2010 Location: location X Posts: 1,815 Trader Rating: (10) Feedback Score: 10 reviews	well kiddo you need to start from scratch then. consult the nistune support forums. __________________ http://www.240sxforums.com/forums/rb...ject-s-rb.html

07-24-2014, 06:03 PM	#6
G-E@Z31P Leaky Injector Join Date: Sep 2012 Location: Toronto Posts: 126 Trader Rating: (0) Feedback Score: 0 reviews	Well as long as you didn't burn a new base image to the board, it should operate the ecu correctly, which means you just have to re-tune everything... If you're really lost, start with the stock maps, resize injectors, change maf curve, then start tuning again (or pay someone) __________________

07-23-2014, 12:37 PM	#3
Croustibat Nissanaholic! Join Date: Aug 2011 Location: France - Toulouse Age: 44 Posts: 1,851 Trader Rating: (0) Feedback Score: 0 reviews	Jump with a big miss, fuel leak ... i'd check pistons and spark plugs before worrying about the fuel pump ... There is a very nice feature on nistune that allows you to compare 2 tunes. Load your stored tune in the second slot, read the current tune in the first, hit the compare button/checkbox/dropdown menu where you can (fuel and timing maps allow it), and you will see the differences.

07-23-2014, 07:42 PM	#4
bonomo Zilvia Member Join Date: Jan 2004 Location: Va Beach Posts: 234 Trader Rating: (1) Feedback Score: 1 reviews	well here is the thing i accidentally uploaded and burned the the current tune on there right before this happened . and i dont remember what one i had on there cause it was a while ago!

07-24-2014, 07:59 PM	#7
bonomo Zilvia Member Join Date: Jan 2004 Location: Va Beach Posts: 234 Trader Rating: (1) Feedback Score: 1 reviews	ok its weird i replaced the spark plugs the cap and rotor still the same . but if the cars cool it will not do it. The throttle response is bad though . like it i punch it it hesitates then revs. the a/f is great though at idle and when revving ! it seems like it would be the maf sensor but the volts are consistent with what the oem specs.

07-27-2014, 04:22 PM	#8
bonomo Zilvia Member Join Date: Jan 2004 Location: Va Beach Posts: 234 Trader Rating: (1) Feedback Score: 1 reviews	anyone else? im trying to get on the nistune forum but i cant post yet!

09-01-2014, 08:15 PM	#9
bonomo Zilvia Member Join Date: Jan 2004 Location: Va Beach Posts: 234 Trader Rating: (1) Feedback Score: 1 reviews	Anyone ? i bought a new tps car ran a little better but it still does the miss at 4k. and its running good a/f but the plugs are showing super rich!