Help Help Help, KA-T detonation, I'm a newb - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

superfasteddie · 11-16-2006, 08:21 PM

Hey guys, first real post, be nice. Just bought an s13 a month ago. Have a few bucks to spend and need to make her reliable and safe. I think she started a little detonation problem today and I need help.

the car:
1992 DOHC KA new head gasket, timing chain, etc. etc. 130k miles
T25 from sr20
RHD manifold
3" DP straight back
2" hotside
frount mount intercooler
2.5" cold side
Greddy BOV
Walbro 255
Blitz turbo gauge
clutch/suspension blah blah blah
I always buy brand name 91 Octane (duh)
Timing is retarded, running 16-17 I think

SO: don't laugh I didn't build it, but need to fix some things. It has no fuel management ie stock fuel pressure regulation, stock ecu, stock MAF, stock injectors, and I'm running .54 bar on the boost gauge at peak.

I drive like granny 80% of the time. It was hot today here in Socal and I heard some detonation as I rolled on the boost on the highway. This was the first time I've ever heard this, and it scared me. I will check plugs/gaps, but want other ideas for now.

What should I spend money on for safe reliable boost now? I hear different stories everytime I'm on here. Z32 MAF? SAFC-2? 370's? E-manage? I am not shooting for max hp, but a good safe setup with the t25 I already have. Any info is appreciated. Thanks.

11-16-2006, 08:21 PM	#1
superfasteddie Leaky Injector Join Date: Jan 2006 Location: Seattle, WA Posts: 107 Trader Rating: (0) Feedback Score: 0 reviews	Help Help Help, KA-T detonation, I'm a newb Hey guys, first real post, be nice. Just bought an s13 a month ago. Have a few bucks to spend and need to make her reliable and safe. I think she started a little detonation problem today and I need help. the car: 1992 DOHC KA new head gasket, timing chain, etc. etc. 130k miles T25 from sr20 RHD manifold 3" DP straight back 2" hotside frount mount intercooler 2.5" cold side Greddy BOV Walbro 255 Blitz turbo gauge clutch/suspension blah blah blah I always buy brand name 91 Octane (duh) Timing is retarded, running 16-17 I think SO: don't laugh I didn't build it, but need to fix some things. It has no fuel management ie stock fuel pressure regulation, stock ecu, stock MAF, stock injectors, and I'm running .54 bar on the boost gauge at peak. I drive like granny 80% of the time. It was hot today here in Socal and I heard some detonation as I rolled on the boost on the highway. This was the first time I've ever heard this, and it scared me. I will check plugs/gaps, but want other ideas for now. What should I spend money on for safe reliable boost now? I hear different stories everytime I'm on here. Z32 MAF? SAFC-2? 370's? E-manage? I am not shooting for max hp, but a good safe setup with the t25 I already have. Any info is appreciated. Thanks. __________________ Dip it and rip it...