Some pics of blown MHG with ARP studs, any ideas why?

SC61 MK3

New Member
Apr 4, 2005
316
0
0
55
FL
hvyman;1669491 said:
What are you tuning with? Do you have egr?

No egr, been like that for 6+ years. Do you think it was runnning to lean? I had the boost turned down to 12psi and sometimes a max of 14psi because I went back to the stock 440s/afm with a walbro, afpr and fcd. It would run right around 12:1 a/f ratio under full boost
 

SC61 MK3

New Member
Apr 4, 2005
316
0
0
55
FL
spikesnstuff0905;1669583 said:
Big single with stock 440's at 12psi? No... of course you weren't running lean...

I have a wideband, it was around 11.5 to 12.0 a/f under full boost if thats lean to you
 

hvyman

Dang Dude! No Way Man.
Staff member
Apr 17, 2007
12,568
1
0
Fullerton,CA
Egr wouldnt matter at wot only cruise and most importantly part throttle up hills. Could be something thats happened over time and then boom.

Could have had a lean spike under boost tho that you might not have seen if the injectors werent up to par. Eh tho.