So I dynoed today and made 276whp/281ft/lbs on 18 psi. I have gt2860rs and full 3" VRS, JWT Ecu, Z32 MAF, 740cc injectors and was expecting more. That being said there is definately an ecu or fuel pressure issue. At redline we were adding 50% fuel throught the SAFC, so either my pump can't keep up or the ecu is not actually programmed for this setup. I'm going to measure the fuel pressure, and check the pump, it's supposed to be a walbro 255 unit. Any thoughts?

So I dynoed today and made 276whp/281ft/lbs on 18 psi. I have gt2860rs and full 3" VRS, JWT Ecu, Z32 MAF, 740cc injectors and was expecting more. That being said there is definately an ecu or fuel pressure issue. At redline we were adding 50% fuel throught the SAFC, so either my pump can't keep up or the ecu is not actually programmed for this setup. I'm going to measure the fuel pressure, and check the pump, it's supposed to be a walbro 255 unit. Any thoughts?

Post up your chart with air fuel.

I haven't scanned it yet, but AF is around 11-11.5 until about 6500 and then goes lean up to 12.2 at redline.

that A/F is still ok to 12.2 bit lean but wouldn't cause det. what was your air temp saying? if it was too night it will restrict power.

So I dynoed today and made 276whp/281ft/lbs on 18 psi. I have gt2860rs and full 3" VRS, JWT Ecu, Z32 MAF, 740cc injectors and was expecting more. That being said there is definately an ecu or fuel pressure issue. At redline we were adding 50% fuel throught the SAFC, so either my pump can't keep up or the ecu is not actually programmed for this setup. I'm going to measure the fuel pressure, and check the pump, it's supposed to be a walbro 255 unit. Any thoughts?

if its a walbro rewire it

I have similar setup, making 269hp @ 14psi.
I think the problem is the JWT ecu, thats why im switching over to AEM EMS.
When i get the retune, im posting the difference.
I expect another 10-15hp on the EMS @ the same boost level.