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Supercharged 4AGE 20v
Posted: Fri Mar 18, 2005 8:37 am
by Underdog51
I have had the megasquirt on my silvertop 20v for a couple of months. Its been good me. I have just fitted the GZE supercharger to the 20v and 4 thortles so i was wondering if anybody had some base maps to start with. I will be honest, i am alot better with fabrication then tuning. I am going to be running the 365cc injectors, 7 psi out of the supercharger to the stock 11-1 compression. I know this should be something i should be able to figure out by now but i am still not completly comfortable with what i am doing as far as tunning. thanks for any help. you can e-mail me at
teamunderdog51@yahoo.com
Scott
Posted: Fri Mar 18, 2005 10:46 am
by 4ag_turbo_20
any chance i could take a look at your NA map? Are you running MSnEDIS? Im having one hell of a time figuring out a map for my silvertop.
Posted: Thu Mar 24, 2005 1:04 pm
by Underdog51
I use Marc's MAP from the black top i just retarded the timing slightly. It's online here somewhere. How much manifold pressure should i expect with 7 psi? thanks
Scott
Posted: Thu Mar 24, 2005 2:47 pm
by lmr052
Underdog51 wrote:I use Marc's MAP from the black top i just retarded the timing slightly. It's online here somewhere. How much manifold pressure should i expect with 7 psi? thanks
Scott
If 14psi = 100Mpa, then 21psi must be 150Mpa. That is where I would start...
Regards, Richard
Posted: Thu Mar 24, 2005 4:43 pm
by Jamesl
atmosphieric =14
7 psi boost = 14+7=21
Posted: Sun Mar 27, 2005 11:25 am
by Underdog51
as hommer would say DOPE. thanks guys. Any place you can help me to start with ignition? thanks
Scott
Posted: Sun Mar 27, 2005 1:06 pm
by Jamesl
If you look in my Success Story (link in sig) there's another link to my configuration document. It's for an NA car. Down in the file are links to my fuel and spark maps, in VEX format for 12x12 tables, MSnS-E. The fuel is rich and the spark is a little retarded for my NA 16 valve 4age. The car ran fine tho. Should be a good starting point. For a car running 7 psi supercharged, I would back off the timing numbers about 4-5 across the board to start.
James
Posted: Tue Jul 25, 2006 1:44 am
by Navi
dont you think a 11:1 compression is a little bit very high for boost!?
stock turbo cars run like 8 or 8.5:1....
some people do it on 9.5 tot 10:1 but 11:1...damn
Posted: Tue Aug 01, 2006 6:00 pm
by gearb0x
its high, but if you keep detonation under control its fine
there was a turbo blacktop running around 7psi running around the drift tracks in aust, was making REALLY good power and it managed to throw a rod before it busted a piston (is a drift car, LOTS of revs!)
Posted: Wed Aug 16, 2006 6:24 am
by CHB
are you using the req_fuel generator and the VE table generator that available online? i heard most people says the generators on the web will create a richer mixture compare to a tuned table using a WB O2? so we actually de-tune the values inside the VE table to get the best combo is it?