new dyno need help

[mk5.0]

Here is my mods jl intake, c&L plenum, 90mm mass air, magnum powers blower, blue superchip, and 6lb lower. I put 255lph fuel pumps and ngk tr6 plugs.
I was makeing 395rwhp 464 tq at less than 10:1 the truck was way rich and I was losing quite a bit of power.

So I picked up a Xcal and had terry tune it for me, well it is makeing even less power now. I have picked up a SCT 2400 and havent put it on yet. Something is totally screwed up. I cant figure it out. I made more power with just a 6lb lower. Any ideas?

[L8 APEX]

When I tuned it was pulling a lot harder than 360hp, dunno what it is now.

[mk5.0]

I havent even drove the truck since it was tuned. I have been out of town in hawaii for work until today. You think it might be the stock mass air pegging out ? Or possibly the plugs ?

[L8 APEX]

A maf will never peg on a dyno or in warm weather., plugs would show rich and miss or spit under load.

[wesman]

Did you see others run on the dyno that day? It'd be nice tto see some other reference points.

--wes

[mk5.0]

True but my truck with just a pulley made more than 350rwhp , I am going to pull the plugs and put a fuel pressure gauge and see what going on tomorrow.

The thing that gets me it just runs and idles too good to be the plugs or fuel.

[Ivanhoe_Farms]

True but my truck with just a pulley made more than 350rwhp , I am going to pull the plugs and put a fuel pressure gauge and see what going on tomorrow.

The thing that gets me it just runs and idles too good to be the plugs or fuel.

O2 sensor??:rolleyes:

[mk5.0]

O2 sensor??:rolleyes:

normally with a bad 02 sensor you get a CEL.

[dboat]

Fuel Filter?

[jmlay]

Look at your air fule ration. It is 13.1 give or take. Way too lean.

Mike