I have a 1988 camaro paxton supercharger with about 9-10psi,trickflow heads,comp cam 220/230 dur 114 lsa 2600 stall nonlockup stock tpi and chip,with 3.42 gears hooker headers borla catback.problem is that when i am 3/4 throttle it will ping but if i put that nos octane boost in the ping will stop.is the injectors to small.timing set at stock 6 degrees.will 30 pounders stop these.fuel pump is walbro 340 with hotwire kit.do not like to retard timing.also i have colder sparkplugs installed.

 

i have the walbro, what is the hotwire kit? and i doubt that 30 lb injectors will help you. lower compression, run race fuel, cooler plugs, intercooler/water injection/ nitrous, timing retard,. lower boost, ..........those are all good start points, the paxton is not efficient and creates tons of heat . good luck

 

what chip is it? what method of extra fuel delivery is being used when the blower is boosting/

 

i still have a stock chip,and the fuel pump with the hotwire kit is fuel pump is powered from the back of the alternator with 8g wire to pump it gets a full 14volts.look at www.racetronix.com

 

well you either need a custom chip to add the fuel, a 749 ecm swap with a custom chip (it senses boost and ads fuel accordingly), or you need an FMU like was supposed to be supplied with your kit to raise fuel pressure a bunch as boost comes up.

here:

https://www.thirdgen.org/techbb2/sho...&highlight=fmu

 

Are you using a FMU to add more fuel?

I think you should swap the fuel pump out for performance one, your combo sounds pretty mean to be using a stock pump. Might also be a good time to start learning to program your own chips before you blow that engine, but for now you could set your base timing back a little then see if you can find someone with a WBO2 to see where your at.

 

i have a walbro fuel pump installed. no fmu

 

solution, use a method listed above to add more fuel. Also not listed above, super fueler or aftermarket ECM.

 

I have a ati fmu i could sell you.

 

what type of power does the walbro pump that i have support without the hotwire kit? Does it hurt the pump to hotwire it? will it not last? thanks

 

check on www. racetronix for info

 

The Walbro pumps will handle 16V w/o a problem.
With the HW harness it will get about 13.5-14.0V all day which is the sweet spot for the pump. Factory spec is rated at 13.5V. The HW harness can actually extend pump life.

http://www.racetronix.com/product/RX..._Pump_Kit.html