hippy

I've read on here, for sure Joe G., that says the 102 intake leaned our LS2 cars out pretty hard. Regardless of the mods below the intake my question is this. How much did YOU change the PE % wise to deal with the Fast Intake, roughly?
I only ask because my intake showed up today but yesterday Earth dropped 12" of snow at my house so I don't know when I will be able to get the car out on the street to find out for myself how much it actually leans it out.

jim2092

If the engine is stock, not much. If it is a stroked 416 with a massive cam, a lot. Either way, it should be tuned before you go WOT.(PE)

sevinn

Don't tune with PE, set it to what you want and leave it alone. You should be tuning fueling via your wideband vs maf hz and your VE equations.

shawnaj7731

is he running speed density?

hippy

I have a 05 LS2, stock cam but 1.8 rockers, stock heads and z06 exhaust with MAF.

irok

my 05 LS2 with cam, headers,Fast 102 and Vararam never leaned out at all when I added the Fast.I checked on dyno before I went WOT.your results may vary

CTD

I checked your profile for additional info "zero". If you are HPT capable I can send you my 06 C6 modified Fast by Spin & Venon Intake only tune file. It's a dyno tune with TR6 plugs.

hippy

I am HPT capable. I would appreciate it to look at it. My email is terribletom@excel.net

Thanks.

Also, installed the intake on New Year's day and was able to drive it a little. The AFR varied (richer and leaner, but very minimally) at different RPMs compared to the stock ported intake but didn't globally lean the car out on the wideband.

schpenxel

Why would you adjust for it being lean with the PE table?

If running MAF only it shouldn't make a lot of difference. More air going through the MAF will register as.. you guessed it, MORE AIR, and if the MAF tables aren't totally screwed it shouldn't be that far off. Not to say it will be perfect.

hippy

I haven't adjusted anything yet. I am not MAF only. Nothing has been screwed with yet on the MAF table. My original question was if that was the place TO adjust the tune if the car was way lean at WOT AFTER installing the FAST.
When I said the AFR varied from my stock ported intake I meant at WOT during my couple of runs with the car.