Need fuel/engine management

[Molotov]

Ive been reading alot in the past few days about turbo charging the ka24de. Ive tried to piece together a kit that will fit my budget but there is one thing I cant make a decision on. First let me describe what I want this set up to do.

This turbo setup is going to be for a daily driven 93 240sx. The engine has a fairly high amount of miles on it but its in good conditon still. Because of budget issues I will not be rebuilding this engine. Im going to run it till it dies. My hope is to get about 250hp at around 10 psi.

Heres a list of everything I plan to purchase and where Im going to get it at.

Snail - T3 from Nissan 300zx Z31 w/ internal wastegateJunkyard 200$

Manifold - Custom Log style manifold http://www.jgstools.com/turbo/ for 250$

Intercooler - Starion FMIC Ebay around 100$

BOV - 1st Gen DSM stockEbay around 25$

Radiator Fan - Flex-a-lite black magic fanEbay around 100$

Summit battery relocation kit50$ at summitracing.com

Injectors - 370cc Sr20det injectorsEbay around 100$

Fuel Pump - Walbro 255 fuel pumpEbay 85$

Boost Controller - Hallman ES Manual Ebay around 40$

All piping including exhaust intake, intercooler, oil lines, vaccuum lines, etc around 250$

Air filter - cone40$

Various Gauges 100$ Ebay

Engine and fuel management - undecided

As you can see I pieced together a fairly good kit for not alot of money. Feel free to critique me on any of the parts or suggest something else.

Now for the main reason I posted... I cant decide what I need for fuel management. I dont want to spend alot. But I also dont want my engine blowing up due to very lean conditions. I have looked at the e-manage but that requires a wideband 02 or a few dyno runs to tune right. The JWT ECU flash is a little more than what I wanted to spend. So is there anything else I can look at It needs to be cheap.

[daniel240]

everything looks pretty good. but what is the radiator fan for? i wouldn't think you would need that. and for turbo's you can get brand new ones on ebay for $300 or less. i got my XS T3/To4e for $350 brand new. if you want the cheapest fuel management then you could hack your mafs. that is what i am doing. it won't cost you anything since you already have the 370's.

[ziggy682]

IF it were between a JWT ECU and an E-Manage, personally I would go with the E-Manage. Of course, you could always go with an SAFC as well. To get your car up and running, you wouldn't need to tune it on a dyno. At first, you can simply tune it very rich to get the car running, and then take it to the dyno for some tuning. You can get dyno time relatively cheap(less than $100).

Your setup sounds pretty similar to mine. I have purchased everything, but not all of it is installed yet. I will finish my turbo project in a couple of months, because i will soon have access to a full shop with MIG/TIG welders, and plenty of tools.

Here's my list of everything I purchased, where I bought the stuff from, and how much I paid.

http://www.trickmotorsports.ne...s.htm

[casman86]

I don't have a 240sx yet, but I already bought an intercooler for it. It's a Saab 9000 front mount. I got it for $25 +$18s/h on Ebay. There's always a few on there, so you could get that and save a few bucks. It's pretty big. Go to http://www.unstable-hybrids.com/projects.htm and go down to Tony's ka24det S14. He moved his radiator back a bit and mounted a saab 9000 intercooler in front of it. It makes the piping really simple. Looks like there's only about 2 ft total piping on it.

Anyway, the Starion intercoolers were originally used because they were dirt cheap, and then everyone started using them and the prices went way up so they're not worth it. Besides, people need to stop raping starions for their IC's. Starions rock.

[Molotov]

Well it looks like I can get a Greddy e-manage on ebay for around 250$. I think ill just stick with that and run it rich till I can find a place that has a dyno in the area. As for the turbo I want the T3 from a 300Z mainly because it has an internal wastegate. Dont want to fool with welding up an external one. Ill look into the SAAB intercoolers.

And ziggy, your setup is almost exactly like mine. How much power are you expecting to make and at how much boost? Let us know when you get it finshed :ylsuper

[fiznat]

whats the problem with welding on a new wastegate? you're gonna have to weld that JGS mani together anyways, whats the difference if you slap on a wastegate flange at the same time?

also as far as tuning I think you're better off with a wideband 02 setup any way you go except maybe the JWT ECU. That is, unless you're fine with paying outrageous prices for dyno time. I know I would much rather be in control of my AFR than know that if I ever have a problem or change anything then I have to go right back to that dyno. There WILL be a point where you've paid more at the dyno shop than it would have cost ya to buy a $300 wideband 02 setup.

[Molotov]

whats the problem with welding on a new wastegate? you're gonna have to weld that JGS mani together anyways, whats the difference if you slap on a wastegate flange at the same time?

also as far as tuning I think you're better off with a wideband 02 setup any way you go except maybe the JWT ECU. That is, unless you're fine with paying outrageous prices for dyno time. I know I would much rather be in control of my AFR than know that if I ever have a problem or change anything then I have to go right back to that dyno. There WILL be a point where you've paid more at the dyno shop than it would have cost ya to buy a $300 wideband 02 setup.

Well Id also have to buy the wastegate and flange. Just for simplicity and cost im gunna go with a z31 t3. Plus I can pick one up locally.

Ill look around for a cheap wideband. If I find one I may pick it up.

[ziggy682]

And ziggy, your setup is almost exactly like mine. How much power are you expecting to make and at how much boost? Let us know when you get it finshed :ylsuper

With my setup, I'm looking for 230 whp at 7-8 psi. I may not make quite that much, but we'll see. I've seen several dynos from KA's with Z31 turbos. They have amazingly flat torque lines. They seem to hit full boost at around 2500 rpm, and stay pretty strong to 5500 or 6000. Not exactly the best turbo for the engine, but it will be a fun to drive torque monster. I will definately dyno the car, and I would like to have it dynoed before, so I can have a before and after. I'll let you guys know. Should have it done in a month or two.

[BoostFab]

Snail - T3 from Nissan 300zx Z31 w/ internal wastegateJunkyard 200$

everything else looks ok, but for $200 you can buy a better turbo (Garrett t3/t04b or t3/t04e) --search on ebay. if i'm not wrong, the Z31 uses the smaller t28.

Quote »Boost Controller - Hallman ES Manual Ebay around 40$[/quote]no need to spend $40, DIY manual boost controller is great. click here: "D.I.Y. Manual Boost Controller"

fuel management, looking to the E-manage--it provides very flexible tuning features comparing to other piggy-back systems.

just my $0.02; good luck bro!