DIY turbo questions

Jan 22nd, 2003, 12:13 AM

ok i have been planning a DIY (do it yourself) turbo project lately.
i figure i can piece everything together. i am doin ggood so far.. still planning everything out... i'm looking at about $850 so far. but i think the ecu will put me over my $1000 budget. i was thinking if this might work, and i kinda borrowed the idea off of one of my genious friends, but if i dont upgrade my ecu, and run a bigger MAF (such as a 95 or 96 240sx) and bigger injectors (such as 370cc 300zx injectors) i already have both of those as left over parts from previouos 240sx projects. does anyone already have a lay out of everyhting planned for a turbo install.
pm me if you have anything to sell. thanx

James · Jan 22nd, 2003, 09:30 AM

if you don't upgrade your ecu you won't be able to run the larger maf or the injectors without buying other more expensive pieces...

bahearn · Jan 22nd, 2003, 11:33 AM

Come on, DOPE, do some research. Hit that search button and start plumbing the depths of already-existing information.

Jan 22nd, 2003, 12:42 PM

the whole point of this is affordablility i'm trying to keep my project under $1k. the ecu alone is half that price. can anyone give me a better estimate on the price of a JWT tuned ecu. this concept really does make sense. my friend and i have tried it on his 240 KA24de-turbo... still in the works.. pushing 9psi now with no ecu. we used 300zx MAF with 560ccinjectors. the MAf should confuse the ecu, run the proper amount of air to fuel to match the MAF so the KA24 240sx MAf is a perfect fit and should work. i was just wondering if anyoen else may have done it.. thanx for any input
also if anyone is selling anything pertaining to my turbo project hit me up

mpg9999 · Jan 22nd, 2003, 01:19 PM

I believe a jwt ecu will run you around 500-600. Personally, I dont know if Id run a larger Maf with larger injectors to compensate for each other without first doing alot of math to figure out how well its gona work. you could also run an apexi afc or something like that, although thats not as good as a jwt ecu, its probably better then what your planning.

James · Jan 22nd, 2003, 06:02 PM

Quote:

Originally posted by DOPE200sxSE
the whole point of this is affordablility i'm trying to keep my project under $1k. the ecu alone is half that price. can anyone give me a better estimate on the price of a JWT tuned ecu. this concept really does make sense. my friend and i have tried it on his 240 KA24de-turbo... still in the works.. pushing 9psi now with no ecu. we used 300zx MAF with 560ccinjectors. the MAf should confuse the ecu, run the proper amount of air to fuel to match the MAF so the KA24 240sx MAf is a perfect fit and should work. i was just wondering if anyoen else may have done it.. thanx for any input
also if anyone is selling anything pertaining to my turbo project hit me up

you're not going to get it under 1k... with or without the JWT ecu you're going to spend an ass load of money. I have everything you have plus the manifold plus a t28 b/b turbo, a spare ecu w/ the JWT stage 2 program, the HS piping and it came up to about 2200... and that is good!

hagasan · Jan 22nd, 2003, 06:39 PM

^^^^^^^^^^^What he said^^^^^^^^^^^^^^

Hell $2200 seems like a bargain. When i was pricing mine I could NEVER come under $3000.

Jan 23rd, 2003, 01:49 PM

wow well alot of my stuff is custom fab, or used.. so trust me i did it for my old 240.. i'll pull it off. and btwi left out th part of the air bypass after the maf. my concept allows air to flow through the maf as well as aroudn it so i'm getting enough air to support the fuels system and actually make it run a bit lean , rather than way rich.. you'll see

**wes** · Jan 25th, 2003, 09:13 AM

I don't see how you will be able to make a bypass for the MAF without making the car run like crap. The ECU reads voltages from the MAF to adjust the AF ratio accordingly. I think it would have to be a VERY complex system to let the right amount of air in just to lean it out a little. If you were set on that why don;t you buy and adjustable FPR or an APEXi unit to accomplish this?

CarloSR · Jan 25th, 2003, 02:18 PM

Quote:

Originally posted by James
if you don't upgrade your ecu you won't be able to run the larger maf or the injectors without buying other more expensive pieces...

The ECU controls everything. It will run like shit.

**sentravis** · Jan 26th, 2003, 12:27 PM

thats a sweet ass looking car carloSR!!!!! very classy looking.. almost saab or bmw like.. nice..

CarloSR · Jan 26th, 2003, 01:11 PM

Thanks 1999GXE1.6..

NissanTuner · Jan 27th, 2003, 11:06 AM

to test this theory unplug the sensor cable from your MAF and rev the engine, youll see how your car runs, and throw a service engine soon light.

mpg9999 · Jan 27th, 2003, 11:10 AM

You guys dont understand whats he's doing. Read it again. Im not saying its gona work. But non the less, I believe you guys arnt understanding what he's saying.

James · Jan 27th, 2003, 11:14 AM

doesn't matter, if you're running more air around the MAF, the engine will run like crap and is very dangerous unless you add in an extra injector that is pumping fuel in all the time...