i need help on the this i did a pull on 3rd gear and i got 2 knocks and after it hit around 5100rpm the car just sound like i got 10 backfire from the exhaust i let off after that i dunno whats wrong the my afr are 11:1 HELP!!!!!!

, , , ,Load,Knock, , , Mod, Mod, , Mod, WB
RPM, MAP, MAF,TPS,Site,Count, Ign#1, Inj#1, Ign, Fuel,Boost, MAF, AFR
, psig, Hz, % , , , deg , duty , deg, % ,(OL) , Hz,
2523, -5.1, 370,100, 10, 00, +15.3, 13.1,+14.3,+30.0,ECU. , 317, 00.00
2531, -5.1, 362,100, 10, 00, +16.3, 13.0,+14.3,+29.9,ECU. , 318, 00.00
2583, -4.3, 410,100, 10, 00, +16.4, 14.0,+14.3,+29.6,ECU. , 318, 00.00
2675, -3.6, 428,100, 10, 00, +15.4, 15.4,+14.1,+29.3,ECU. , 336, 00.00
2777, -3.0, 490,100, 10, 00, +15.4, 16.8,+13.9,+28.8,ECU. , 316, 00.00
2881, -2.4, 548,100, 10, 00, +13.6, 19.0,+13.4,+28.4,ECU. , 436, 00.00
3003, -1.4, 553,100, 10, 00, +12.9, 20.8,+12.8,+26.8,ECU. , 401, 00.00
3147, -0.4, 676,100, 10, 00, +11.4, 24.4,+12.7,+25.0,ECU. , 746, 00.00
3290, +0.8, 732,100, 10, 00, +9.3, 25.8,+12.6,+22.6,ECU. , 505, 00.00
3380, +2.3, 786,100, 10, 00, +4.2, 28.3,+12.5,+24.1,ECU. , 502, 00.00
3546, +3.9, 896,100, 20, 01, +3.2, 36.7, +7.4,+25.6,ECU. , 909, 00.00
3716, +5.9, 970,100, 20, 00, +3.3, 39.3, +6.9,+26.8,ECU. , 816, 00.00
3875, +7.8,1048,100, 30, 00, +2.5, 40.8, +5.1,+26.4,ECU. , 714, 00.00
4045, +9.0,1000,100, 30, 00, +2.7, 41.6, +4.7,+25.8,ECU. , 806, 00.00
4224,+10.2,1066,100, 40, 00, +2.9, 42.3, +7.6,+25.0,ECU. , 936, 00.00
4403,+10.8,1103,100, 40, 00, +3.9, 46.6, +7.7,+24.4,ECU. , 889, 00.00
4541,+11.3,1256,100, 50, 00, +3.9, 47.8, +7.1,+23.6,ECU. , 965, 00.00
4662,+11.5,1193,100, 50, 00, +3.9, 50.1, +7.4,+21.4,ECU. , 922, 00.00
4938,+11.0,1231,100, 50, 00, +5.3, 49.5, +9.0,+19.6,ECU. , 976, 00.00
5081,+10.6,1312,100, 60, 00, +6.1, 48.9,+10.8,+18.6,ECU. , 868, 00.00
5224,+10.0,1282,100, 60, 00, +6.2, 51.8,ECU. ,+18.0,ECU. ,1012, 00.00
5192, +9.6,1101,100, 60, 00, +7.5, 43.5,+11.0,+18.0,ECU. , 720, 00.00
5299, +8.8, 244, 8, 00, 01, +20.1, 9.5,ECU. ,+18.0, LCM., 53, 00.00
4938, +2.7, 107, 0, 00, 00, +36.3, 6.1,ECU. ,+20.2,ECU. , 52, 00.00

 

1-3 counts I wouldn't worry about...I assume this is on pump gas?

 

yeah its on pump gas

 

the thing is the car did a multi backfire like a damn machine gun at 5100rpm thats weird i had 11:1 afr

 

how bad is the backfire...11.1 isn't that rich where it would typically cause very loud backfires as you call them..

 

its not just a big bang its like 10 bangs really fast

 

Sounds like missfire,

What boost were you running? Also what pulgs and gap?

 

21 .25 gap bpr8es

 

Your log looks odd, you're adding between 20-30% fuel with the Utec, but your Mod Maf column is running lower than your Load Maf column. Isn't that backwards?

Looks to me you've got a serious boost leak. Your boost is only reaching 11psi at WOT????

 

no my boost reading is fine i checked all the clamps and its all tight

 

What option are you logging with? It looks like "1" or "shift 1". If so, boost is the second column.

late edit, I'm assuming you're running an external map sensor, but you may not be.

 

yeah im using external map i used UTEC Control Center to log that

 

Something isn't adding up then, right? If you say your boost is fine, shouldn't the external map correspond with what your gauge is reading?

 

That log looks a little strange to me. Can't figure it out yet. 10 Bangs sound like an ignition cut. Have you beenn running the UTEC and this map for a while or is it new?

 

its new just got new injectors and retuned it it was fine at first then it just started doing that thats why im sitting here scratching my head