s15 t28 upgrade

[leroy12]

hey guys im new to the ca18det but i want to turn my ca18det into a 250hp machine
the turbo im looking at buying is here
http://www.enjukuracing.com/sr20det-tur ... -7353.html

and i think all i need for it to bolt right on is this plus .032 restrictor

http://www.frsport.com/DIF-10044-Bottom ... 15431.html

and for easy clocking this

http://www.enjukuracing.com/turbo-reclo ... -9214.html

im also looking at buying an sr20 3" o2 housing with sr20 3" downpipe combo off cx racing.

would all of this bolt right up and get me 250hp with a ca18det tuned using safc

[sjbsuperman1425]

you can find a used S15 turbo WAY cheaper than that. yes you need the restrictor, but buy the clocking adapter from FRSport, they are a little cheaper and you will get free shipping.

CXRacing is quality parts IMO, so the O2 housing and downpipe are a good idea, but you may have to modify your downpipe if you are using the stock manifold, because the angle of the stock manifold w/ the SR O2 housing puts the downpipe into the frame rail.

Until you get a tune, like others have told me, keep it under 10psi. I'd also suggest a wideband. I'm currently doing this upgrade over the winter and will have everything but the tune, injectors, and MAF.

[Ca_Silvia]

I made 250whp on a stock SRt25 turbo with a TUNE. You will need an SR turbo outlet for sure on that turbo as well as an inlet.

SAFC are garbage for "tuning" - Check the dyno sheet thread

[float_6969]

Yea, for 250whp, the T28 is overkill. It's more like a 300whp turbo. You'll get better response and low end power from the SR T25 and a good tune. And as CA_Silvia said, an SAFC doesn't count.

[mr_ca18det]

Sorry to thread jack i have an oem s15 turbo i'm trying to sell has roughly 800-1000 miles on it need to go bigger. pm me if intrested

[float_6969]

Why didn't you PM him directly instead of junking up this thread?

[r34 gtr]

Good question, but the OP bought my GT28, so no need to harass him.

[leroy12]

What type of MAF sensor would i need in order to reach 250-300hp? also where can i purchase it new? I'm trying to figure out what parts i need to get together in order to reach that hp. i have the turbo now

what kinda of injectors should i use and where can i find some for a nice price?

what kinda of tuning software/hardware would be sufficient enough to tune with. or would a shop that tunes have what would be needed to tune it?

sorry for all the questions, im just new to nissans.

[r34 gtr]

You will probably want a N62 MAF (from a 300zx TT). I wouldn't buy it new, as they can be bought cheap here on the forum. You will be looking at about $80 shipped, make sure it comes with the connector.

You are going to want at least 444cc/min injectors, but 550cc/min would be ideal. Low impedance, top feed.

I would recommend Nistune software. Search around on nico, there should be someone in the Atlanta area capable of installing it on your ECU. Then you can have it tuned (I recommend Scott Seigel at Top Speed in Marietta, it will be expensive though, $250/hr with a 2hr minimum).

[leroy12]

Would a z32 maf work? A buddy of mine has one is why I ask

[dash]

SAFC are garbage for "tuning"

that statement is absolute rubbish. Tell that to the DSM community, to start with.
Getting their heavy 2L cars down to mid 12s with only "basic mods", on stock ecu and stock 14b turbo, was a way of life.

Read how RS12turbo ca18 performed @18psi on his 16g. Bone stock ecu, z maf, 450s

A corolla member ca18 powered ae86 drove 10 hours to compete in a drift event, then back home @15psi(to4e?). Stock ecu, 510s?, N60 maf. Car was nuts @22psi

I have 2 buddies @28psi on precision 62s, street 1JZ, bone stock ecu, safc;
s13 goes 7.2 in 1/8th (24psi) with the wrong gear in the car
sc300 with 300 pound driver ets 7.3 1/8th
Can't remember their injector sizes, but they leave soft due to no launch control. Both pull stupid hard and run flawless. What more is to be expected ?

SAFC is extremely capable in the right hands
I'd much prefer a SAFC, wideband and inexpensive knock headphones to "tune" my ca18, than a 'mail-order' chip
Seen way to many hot cars gone that route

[float_6969]

My main problem with the SAFC is the UNCONTROLLABLE effect altering the MAFS signal has on the ignition timing. Yes, you'll get the fuel you want, but what is the timing doing? At best, it's being retarded further than needed and you give up power and economy. At worst, they become too far advanced and your PCP's occur too soon in the combustion cycle and you get a bent rod or a cracked ringland. For small changes like increased boost on a stock setup, or tweaking a tuned chip, I think they're great, as the effect they have on timing is never more than a couple of degree's. But when you throw a bigger turbo, bigger injectors, bigger MAFS, bigger exhaust, bigger intake, and more boost, at an otherwise stock ECU, I've seen the timing change as much as 7° w/an SAFC! That's huge! ESPECIALLY on the CA18DET. This motor is VERY sensitive to timing, and it does NOT like a lot of advance.

Can it be done? OFCOURSE! Is it the safest way? Definitely not. Is it going to blow up your motor? Maybe not. Maybe it will...

[dash]

main problem with the SAFC is the UNCONTROLLABLE effect altering the MAFS signal has on the ignition timing

bingo! and that is where u separate the sheep from the goats
The clever "tweaker" uses that timing 'manipulation' to his advantage. SAFC can lean or richen, you decide.... via injector size, hacked afm, fpr, etc...
Sure its not ideal, but hella effective, and perfect for those who wanna dive into tuning, rather than "sit back and have it mapped" for them.
Soft learning curve, ez wire in, good value, .....unmatched?

Street cars I mentioned r not mild, they rip.

I posted a link a while back, detailing a 2001? toyota tacoma truck project;
added a T4, hacked the stock afm, supra 440s..... went from a boring 16sec hauler to a mid 12sec porsche eatin' daily(440 ft-lbs tq). Original V6 and stock ecu untouched. How ? SAFC, that's it.

SAFC are not "garbage". More appropriate wording may be, "I don't know how to make it achieve amazing results as others have". - lol

[s13drifter88]

This may be overkill but Imma go ahead and say it. For 250+whp my personal route would be the S15 T28, 440cc injectors, N60 maf and a rom-tune from either Jim Wolf or Enthalpy. U can get the injectors pretty cheap from an N/A FC RX7. That setup should yeild u a rock solid 270-280whp capable car. IDK about the response on a CA but my best friend Thomas has the S15 28 on his SR and it stupid responsive. As for the SAFC I have mixed feelings about it. Good for some things and Bad for others so Id suggest just going with a simple rom-tune and ejoy the ride. Good luck man