This is my 95 yj 2.5l with a custom volvo turbocharger fitted on it. I run about 7psi on average and sometimes when im wheeling ill run 10psi for briefs periods. Engines got 170k on it and still running strong. This was basically my effort to bridge the gap between a v8 engine swap and a low buck power adder. Ive only put 400 bucks into it and most of that was the wideband air fuel ratio monitor setup. If anyones unhappy with their 4cyl power and thinks this may be the option for you, i can explain all the details.
Thanks man. Yeah i believe 89 wranglers had a throttle body injection 2.5 and a carbed 6cyl engine. But ultimately i dont believe that would effect his turbocharger mod because all hed have to do is bump up the fuel pressure a lil. I still run stock injectors and just added about 15 psi to the base fuel pressure. Stock fuel pump also
turbocharger from a 95 volvo 850 wagon - td04hl-15g
Homemade turbo mount off of the ac bracket
Innovative wideband o2 sensor kit with datalogging
Ebay Blow off valve
Aeromotive fuel regulator with boost reference~ set at 58 base pressure
One step colder autolite spark plugs
stock fuel injectors (tried 30lb ones but were too rich)
I use a choke cable attached to the wastegate to vary my boost pressure on road or offroad. I run about 5psi on road and up to 10 offroad
All the exhaust tubing is old volvo exhaust cut and clocked in order for the bends i needed, then wrapped in heat wrap or whatever
Thats pretty much it, i didnt eff with timing whatsoever. I run ethanol through it and i dont notice any detonation at all. Even without an intercooler to cool intake charge. I contemplated installing one but it runs fine without so... Any other questions? I could upload youtube videos if interested
Fuel management is pretty much monitor my afr gauge and too lean ill bump up my base fuel pressure a few psi or too rich visa versa. Its not the smoothest transition in the powerband, its basically when i crack the throttle and my fpr senses no vaccuum it bumps up pressure and compenates for the boost im adding. Its tuned really well for about 5psi which is very noticable but when i get to 8 or 10psi it runs really hard in 4low but is on the lean side
What you are reffering to is an FMU and is a good low dollar solution for fuel management, as you said it is not ideal and causes flat spots. Sounds like it is working well though congats.
I'd love to see the wide band data log on a dino or 0-60
Yes i guess thatd be right. Technically its not an FMU, its just my fuel pressure regulator that has boost reference. Every one pound of boost equals one more psi of fuel pressure. 1 to 1 ratio. But i guess both are the same principal, except most FMUs are set and no adjustments can be made. And usually they are ratios like 1psi boost equals 8psi fuel pressure or greater. Just saying, i looked into them orginally
How did you reroute your exhaust to the housing? just made a different manifold? I can't tell from the pictures. Looks like you routed it around the oil pain and up, but how does it exit after that? Does it just dump out of the engine bay?
The exhaust is ran from the stock manifold, under and across the oil pan then up to the bracket. Then after the turbo it goes straight down and back to hook up with my stock exhaust on the passenger side. Ill try to show in this picture if it uploads(damn mobile app). Also my afr at full boost is right at 12.2:1.
I also included pics of my front winch bumper that i built a while back and my latest project, some homemade highline fenders
Oil feed is just a tee into the oil sending unit and i ran the return line into the front of the timing chain cover.
No i didnt mean E85 i just meant ethanol mix, here in iowa its like 89 octane, the cheapest gas u can buy, other than e85 obviously.