i have mods in the sig. pump is a walbro pump from fulltrottle not the 340 but there new one that is "better" then the 340. now my problem, o2s fall down to 680-730 after 1st gear. now i started with the 43 line off pressure and started moving it up by 2 and it got a little better but still falls to the area listed above. now the fp is at 54 with line off and still is low on fuel. now i get no ore then 1.9knock total ever even at 110mph. i am running 18-20psi. with turbotweek chip at settings for extra timing in 1st and 2nd only.
? 1 is why would the o2s be dropping that much. i have tried to lower boost to 14-15 but it did not change the fuel problems. could it be the pump is not strong enough for the combo? my last gn felt this way when i had a bad pump. i used to have same combo but with a 63turbo thdp and a atr double pump system. and when i change 1 of the pumps in the tank it was a completly different car.
? 2 i had some boost issues but found them when i put the front mount on last night and found 2 cuts in the turbo/ic hose. the new ic fixed the boost issues. now i spin very bad from a roll or a stop. my best before the ic was a 13.3 @ 101 with no spin and a 2500rpm launch. now the best i can get is a 13.45 @ 100 leaving at idle anything more and spins so bad even 1/2 throttle that the best i can get is high 13s. now i know 13.4 at idle is a mid-high 12 with proper launch and slicks or dr, but the mph seems way off to me like almost 8-10 for my combo. like i said my last gn with only a 63 and double pumper was 114 street and 116-118 track and slicks with a best of 6.7 1/8mile and 11.5 1/4 mile before i found the pump problem. the car was stolen before i got back with the new pump.
i guess do you guys think my main problem is fuel? chip?
? 1 is why would the o2s be dropping that much. i have tried to lower boost to 14-15 but it did not change the fuel problems. could it be the pump is not strong enough for the combo? my last gn felt this way when i had a bad pump. i used to have same combo but with a 63turbo thdp and a atr double pump system. and when i change 1 of the pumps in the tank it was a completly different car.
? 2 i had some boost issues but found them when i put the front mount on last night and found 2 cuts in the turbo/ic hose. the new ic fixed the boost issues. now i spin very bad from a roll or a stop. my best before the ic was a 13.3 @ 101 with no spin and a 2500rpm launch. now the best i can get is a 13.45 @ 100 leaving at idle anything more and spins so bad even 1/2 throttle that the best i can get is high 13s. now i know 13.4 at idle is a mid-high 12 with proper launch and slicks or dr, but the mph seems way off to me like almost 8-10 for my combo. like i said my last gn with only a 63 and double pumper was 114 street and 116-118 track and slicks with a best of 6.7 1/8mile and 11.5 1/4 mile before i found the pump problem. the car was stolen before i got back with the new pump.
i guess do you guys think my main problem is fuel? chip?
