Bosch 550cc injectors for our motors
Re: Bosch 550cc injectors for our motors
Is that $225 each? If so that's about 3 times what they should be.
Re: Bosch 550cc injectors for our motors
Check out the link. It is for a set of 6! The adapters for the injector harness are $25. of that. They are $33. each plus $4. each for the adapters as these injectors have an EV-14 clip and we have an EV-1 I believe. I was shocked at the condition of the o-rings of the stock injectors but after 14 years I suppose that was to be expected. I would suggest changing the O-rings themselves in not the injectors also at that price.
I am repeating another post here but I am using a tune for 450cc injectors that was generated for race fuel(TORCO @ full strength) which added 1.5* of timing and 30whp according to Jerry at E/C. I adjust for the extra timing with a richer amount of fuel. It runs in the 11:1 range with 11.5-11.9:1 my target. I don't track the car and am planning to do the exhaust with a DYNO before and after. Hoping to gain 15whp+. I either have the parts or have them on order. I'll make the call to the shop with the DYNO when all parts are in hand.Then if Rob's headers show 15whp+ in independent testing I will likely go for those.
Mark
I am repeating another post here but I am using a tune for 450cc injectors that was generated for race fuel(TORCO @ full strength) which added 1.5* of timing and 30whp according to Jerry at E/C. I adjust for the extra timing with a richer amount of fuel. It runs in the 11:1 range with 11.5-11.9:1 my target. I don't track the car and am planning to do the exhaust with a DYNO before and after. Hoping to gain 15whp+. I either have the parts or have them on order. I'll make the call to the shop with the DYNO when all parts are in hand.Then if Rob's headers show 15whp+ in independent testing I will likely go for those.
Mark
Re: Bosch 550cc injectors for our motors
I am confused by your statement that if the fuel pressure is controlled our engines can flood at 22PSI. Could you clarify that please? Given the state of the O-rings on my stock injectors I am glad I did the swap as they had hardened to where it is likely they had started to leak. Highly recommend everyone change the O-rings at least. With stock boost the 450cc injectors are fine, with a 62mm SC pulley the motor is likely borderline. AFR gauge is a must. I imagine my motor was running lean up top when I ran just the 65mm SC pulley. Mark
Re: Bosch 550cc injectors for our motors
I tried to get away with the stock 450cc injectors but Jerry at E/C said he had already pushed the stock injectors past the duty cycle he likes and it was he who recommended I get larger injectors. Now I can run 20-22psi boost and not go lean but run AFR's in the mid 11:1 range but not going into the 12:1 range. I could NOT address the lean issue with the adjustable regulator alone. I could get the first 2 gears to run OK but then the rest ran pig rich.
I am confused by your statement that if the fuel pressure is controlled our engines can flood at 22PSI. Could you clarify that please? Given the state of the O-rings on my stock injectors I am glad I did the swap as they had hardened to where it is likely they had started to leak. Highly recommend everyone change the O-rings at least. With stock boost the 450cc injectors are fine, with a 62mm SC pulley the motor is likely borderline. AFR gauge is a must. I imagine my motor was running lean up top when I ran just the 65mm SC pulley. Mark
I am confused by your statement that if the fuel pressure is controlled our engines can flood at 22PSI. Could you clarify that please? Given the state of the O-rings on my stock injectors I am glad I did the swap as they had hardened to where it is likely they had started to leak. Highly recommend everyone change the O-rings at least. With stock boost the 450cc injectors are fine, with a 62mm SC pulley the motor is likely borderline. AFR gauge is a must. I imagine my motor was running lean up top when I ran just the 65mm SC pulley. Mark