Questions on this budget setup ...

[Drift]

Hello all, I've planned on going the KAT route for some time and have a few questions. I read much much more then I post. And as a side note I've been more motivated recently due to my friend who just dropped an SR into his car and it was my first experience w/ boost riding w/ him. Needless to say it is addictive. I want to do this on a budget -- the right way -- for now w/ the capability of upgrading later. Here's what I've come up w/ so far, and if there are pros/cons of the set up or something I'm just plain missing please let me know.

Z31 T3 <=$100JGS Manifold (unwelded) = $149255 LPH Walbro = $109Nismo adjustable FPR = $120Sidemount or two = <=200MSD BTM = <=200Gauges = ??Plumbing and hoses etc = ??

I would like to run 8-10 psi for what ever the max hp/tq I can get from this. Questions:

1) Is there any major flaw w/ this setup?

2) Can the FPR support the fuel requirements needed w/ the stock injectors?

2a) Also, I don't understand the difference between a 1:1 FPR vs a 5:1 or 7:1 etc. Could someone help?

3) Does the Z31 turbo have the ability to be upgraded to a T04E/B compressor?

3a) Since it is internally wastegated to 7PSI, a boost controller manual/electronic will be needed to increase boost because it cannot be dropped below 7PSI right?

4) What's the whole deal w/ welding two sidemounts together? (I can weld I just want to know if its something I can do.)

5) What are the specs on the T3 as far as A/R for turbine and compressor - any efficiency maps?

6) Has anyone successfully used the hacked maf setup on the S13 yet?

That's about all I can think of for now. Any help would be greatly appreciated, I don't post much and I do search often, but after reading so much w/out my specific question answered I get tired.

[andrave]

Hello all, I've planned on going the KAT route for some time and have a few questions. I read much much more then I post. And as a side note I've been more motivated recently due to my friend who just dropped an SR into his car and it was my first experience w/ boost riding w/ him. Needless to say it is addictive. I want to do this on a budget -- the right way -- for now w/ the capability of upgrading later. Here's what I've come up w/ so far, and if there are pros/cons of the set up or something I'm just plain missing please let me know.

Z31 T3 <=$100JGS Manifold (unwelded) = $149255 LPH Walbro = $109Nismo adjustable FPR = $120Sidemount or two = <=200MSD BTM = <=200Gauges = ??Plumbing and hoses etc = ??

I would like to run 8-10 psi for what ever the max hp/tq I can get from this. Questions:

1) Is there any major flaw w/ this setup?

2) Can the FPR support the fuel requirements needed w/ the stock injectors?

2a) Also, I don't understand the difference between a 1:1 FPR vs a 5:1 or 7:1 etc. Could someone help?

3) Does the Z31 turbo have the ability to be upgraded to a T04E/B compressor?

3a) Since it is internally wastegated to 7PSI, a boost controller manual/electronic will be needed to increase boost because it cannot be dropped below 7PSI right?

4) What's the whole deal w/ welding two sidemounts together? (I can weld I just want to know if its something I can do.)

5) What are the specs on the T3 as far as A/R for turbine and compressor - any efficiency maps?

6) Has anyone successfully used the hacked maf setup on the S13 yet?

That's about all I can think of for now. Any help would be greatly appreciated, I don't post much and I do search often, but after reading so much w/out my specific question answered I get tired.

1: yes, no fuel management. probably won't run.

2: not an fpr.2a: a regular fpr is mainly used on NA engines. the ratio concerns how much fuel it adds per unit of air/boost/vaccuum (If I'm not incorrect, I am on shaky ground here). Anyway a FMU adds more fuel per air so it can support a turbocharged engine. It does this by increasing the pressure on your stock injectors. an fpr just lets you adjust fuel pressure.

3: you cannot decrease boost past the wastegate setting, only increase it. You will have to change the wastegate/ waste gate spring to do that. To increase boost you will need a boost controller but a simple 20 dollar hallman would work fine.

4: you can weld but can you weld aluminum? the idea is that you have more surface area to cool with. If you are really hot at welding and have the proper equipment and experience to weld intercoolers, then go for it. otherwise I'd say its very tricky and shouldn't be done by amatuers. Besides for the setup you are talking about a regular starquest core would be adequate.

5: haven't seen any for the stock turbo, I'd imagine that specs would be found fairly easily using google or searching at a Z31 forum.

6: yes, I saw a post by someone who had relocated their piping. It was a little ghetto but apparently it was working for them. At this point in time though, you don't need a hacked mafs because you don't have larger injectors in your list of fun things, and a hacked mafs is used to control them. You need either hacked mafs and larger injectors, stock injectors plus FMU, or larger injectors plus an SAFC. a BTM won't be needed for running low boost, but I'd say 7 psi would be enough for me to want one. 200 dollars is way too high, I've seen them around 60 dollars.

I think you should look into the substantial cost of oil(water?) feed lines, downpipe/flanges/welding, mandrel bends, silicone couplers... man that **** starts to add up quick and turns a 600 dollar budget into 1k+

[Drift]

Thank you for clearing things up for me andrave. I was confusing the Nismo FPR w/ a RRFPR which is what I thought it was. I wanted to go w/ the RRFPR because I thought it would be cheaper then say an Apexi or Greddy AFC unit. But for $269 retail for the BEGI and the shakiness I've heard from others of the RRFPR, it would seem that I'm better off w/ an electronic unit + injectors for the upgrade ability in the future part. So okay more questions :

1) You never answered the question about upgrading the compressor housing on the T3, I don't see why it'd be a problem, but I'd like to know for sure.

2) Replace the Nismo unit w/ a BEGI FMU or Vortech FMU, what ratio would I need to use on this 4:1, 6:1, 8:1, 10:1, or 12:1 for 8 - 10 PSI? Now how's the setup looking? Link: http://www.nipponpower.com/fuel/vortech_fmu.html

3) Lets say I did go to 370cc injectors, could the overall fuel amount be tapered down w/ say the Nismo FPR so it doesn't run so rich and the have the Vortech FMU adjust the boost dependent fuel amount increasing it w/ boost?

My budget is closer to say $1500. The longer I wait the more my budget, but the longer it will be before I have everything installed. I want this power by the summer. Max power isn't a goal here yet, maybe just something to keep up w/ a stock SR20 right now, maybe a little faster.

Thanks againJeremy

[andrave]

yes you can switch compressor housings. I dont' know what fpr to use on a ka, I think others used 7 or 8:1 but I wouldn't trust my memory for that.the 370's are going to need safc, hacked mafs, or some kind of fuel management no matter what you do.