# S13 w/sr20det running lean **URL:** \ **Category:** SON240sx Automotive\ **Created:** [May 10, 2009, 8:08pm UTC](https://forums.speedlife.net/t/s13-w-sr20det-running-lean/124344 "2009-05-10T20:08:30Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![Two4Tchaz](https://avatars.discourse-cdn.com/v4/letter/t/9fc348/32.png) [@Two4Tchaz](https://forums.speedlife.net/u/Two4Tchaz)\ **Post date:** [May 10, 2009, 8:08pm UTC](https://forums.speedlife.net/t/s13-w-sr20det-running-lean/124344/1 "2009-05-10T20:08:30Z")
okay so ive installed bings intake manifold, all is good but shes running really lean. now im guessing this is because of the extra air its getting now. ive done a boost leak test and there are no leaks in the intake system. i have an safc 2 not installed yet, my question is can i safely tune my car wit this, or do i need to get some other management program… my car is a 1990 with redtop sr, with front mount and bings manifold, everything else is fairly stock on the motor. the car stays lean till i step on it( not full punch cuz i dont want to damage anything) which then it only goes to stoich and drops back to lean, never enters rich. any help on this is greatly appreciated. thanks Chaz ---
**Author:** ![tatti](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/tatti/32/5742_2.png) [@tatti](https://forums.speedlife.net/u/tatti)\ **Post date:** [May 10, 2009, 8:11pm UTC](https://forums.speedlife.net/t/s13-w-sr20det-running-lean/124344/2 "2009-05-10T20:11:09Z")
hey man, off topic but how did you do a boost leak test, send me a pm, thanks and good luck ---
**Author:** ![Two4Tchaz](https://avatars.discourse-cdn.com/v4/letter/t/9fc348/32.png) [@Two4Tchaz](https://forums.speedlife.net/u/Two4Tchaz)\ **Post date:** [May 11, 2009, 1:17pm UTC](https://forums.speedlife.net/t/s13-w-sr20det-running-lean/124344/3 "2009-05-11T13:17:39Z")
Just google, DIY boost leak tester and your set , anyone got input on this issue I’m having? ---
**Author:** ![sil8t](https://avatars.discourse-cdn.com/v4/letter/s/ea666f/32.png) [@sil8t](https://forums.speedlife.net/u/sil8t)\ **Post date:** [May 11, 2009, 1:57pm UTC](https://forums.speedlife.net/t/s13-w-sr20det-running-lean/124344/4 "2009-05-11T13:57:01Z")
what u using to monitor a/f ratio i hope its not just one of those cheap “its close enough gauges”? ---
**Author:** ![Two4Tchaz](https://avatars.discourse-cdn.com/v4/letter/t/9fc348/32.png) [@Two4Tchaz](https://forums.speedlife.net/u/Two4Tchaz)\ **Post date:** [May 11, 2009, 5:46pm UTC](https://forums.speedlife.net/t/s13-w-sr20det-running-lean/124344/5 "2009-05-11T17:46:24Z")
ive got a wide band, now wit the safc 2 am i going to be able to correct my fuel and have it run like before the intake mani install, just curious cuz dont want to waste my time installing the safc and have zero success… ---
**Author:** ![CRXsi2NR](https://avatars.discourse-cdn.com/v4/letter/c/9de0a6/32.png) [@CRXsi2NR](https://forums.speedlife.net/u/CRXsi2NR)\ **Post date:** [May 11, 2009, 6:02pm UTC](https://forums.speedlife.net/t/s13-w-sr20det-running-lean/124344/6 "2009-05-11T18:02:13Z")
yea thats wha a safc does u can runn rich or lean as shit , better then an fmu 😊 ---
**Author:** ![Two4Tchaz](https://avatars.discourse-cdn.com/v4/letter/t/9fc348/32.png) [@Two4Tchaz](https://forums.speedlife.net/u/Two4Tchaz)\ **Post date:** [May 11, 2009, 6:41pm UTC](https://forums.speedlife.net/t/s13-w-sr20det-running-lean/124344/7 "2009-05-11T18:41:22Z")
thanks man, thats what i wanted to hear, i just need to add fuel throughout my band according to the a/f ratio. ---
**Author:** ![S14Point5](https://avatars.discourse-cdn.com/v4/letter/s/f0a364/32.png) [@S14Point5](https://forums.speedlife.net/u/S14Point5)\ **Post date:** [May 11, 2009, 7:34pm UTC](https://forums.speedlife.net/t/s13-w-sr20det-running-lean/124344/8 "2009-05-11T19:34:05Z")
have you checked basics…fuel pressure? fuel filter? restricted exhaust? ---
**Author:** ![minimum](https://avatars.discourse-cdn.com/v4/letter/m/e47774/32.png) [@minimum](https://forums.speedlife.net/u/minimum)\ **Post date:** [May 11, 2009, 9:47pm UTC](https://forums.speedlife.net/t/s13-w-sr20det-running-lean/124344/9 "2009-05-11T21:47:20Z")
how much boost are you running? ---
**Author:** ![Two4Tchaz](https://avatars.discourse-cdn.com/v4/letter/t/9fc348/32.png) [@Two4Tchaz](https://forums.speedlife.net/u/Two4Tchaz)\ **Post date:** [May 12, 2009, 2:32pm UTC](https://forums.speedlife.net/t/s13-w-sr20det-running-lean/124344/10 "2009-05-12T14:32:15Z")
just 8 psi for now till i get this settled,then i run 10 , and my fuel filter is new, as for fuel pressure it should be fine cuz the car was running good before the intake swap, are you saying that with adding the manifold it wouldnt make the car run lean? I am just figuring that its running lean because the air is getting to the engine faster; but who knows? also if this helps my timing is right on, brand new coolant temp sensor, new knock sensor, newer tps, and just a regular maf( not the 300zx one, but could consider doing that to), also what you mean by restricted exhaust? let me know on what you guys think. thanks Chaz ---
**Author:** ![minimum](https://avatars.discourse-cdn.com/v4/letter/m/e47774/32.png) [@minimum](https://forums.speedlife.net/u/minimum)\ **Post date:** [May 13, 2009, 8:55pm UTC](https://forums.speedlife.net/t/s13-w-sr20det-running-lean/124344/11 "2009-05-13T20:55:22Z")
yeah could be fuel issues… what fuel pump are you running? you could also check resistance of injector coil. approx 11 ohms i believe. ---
**Author:** ![Two4Tchaz](https://avatars.discourse-cdn.com/v4/letter/t/9fc348/32.png) [@Two4Tchaz](https://forums.speedlife.net/u/Two4Tchaz)\ **Post date:** [May 19, 2009, 6:43pm UTC](https://forums.speedlife.net/t/s13-w-sr20det-running-lean/124344/12 "2009-05-19T18:43:06Z")
problem solved , my fuel pressure regulator was gone. fuel in my vacuum lines. just thought id update thanks to all Chaz