How are ATP running this GT28RS kit without an N75 valve?
05-05-2004, 09:18 PM
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How are ATP running this GT28RS kit without an N75 valve?
I know that those who would know have probably already seen this link, so sorry for the repost, but do they just use a boost controller instead of an N75? it doesn't say anywhere in the link.
Just curious.
TIA<ul><li><a href="http://www.atpturbo.com/root/releases/release050304.htm">http://www.atpturbo.com/root/releases/release050304.htm</a</li></ul>
Just curious.
TIA<ul><li><a href="http://www.atpturbo.com/root/releases/release050304.htm">http://www.atpturbo.com/root/releases/release050304.htm</a</li></ul>
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05-09-2004, 06:15 PM
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I'm running K03 software on DBW with GT28RS!
45# injectors, s4 maf housing, bosch inline fuel pump, manual boost controller at 20 PSI. Idles perfect, Air to fuel cruises in the 14s drops to mid 13s during spool and ends up around 11.5 at 6800rpm. Just got it together so working out some kinks before I dyno it.
05-10-2004, 10:00 AM
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how big is the S4 MAF housing?
I would get a wideband on their when it's on the dyno to verify the mixture. So you have the GT28RS on the stock manifold with some adapter? Sounds good man.
05-10-2004, 06:23 PM
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3" ID
<center><img src="http://pictureposter.audiworld.com/49455/108_0804.jpg"></center><p>Thanks, I'm using ATP manifold with custom 3" intake and 2.5" FMIC piping.
Running the LM-1 to monitor A/F. Also using a box to fine tune the maf signal. However the S4 maf and 45# injectors are a good match. Idle and mid are great. Up top gets pretty rich I saw 10.1 on the LM-1 before I adjusted the top end to 11.5. I also adjusted spool up for around 13.5 the k03 chip keeps things around 14.7 until it gets up top. Cold start isn't exactly perfect. It hunts around but no big deal.
I read a corrected 254 g/s at 1 bar on the maf. Haven't logged the maf at 20psi yet!
Running the LM-1 to monitor A/F. Also using a box to fine tune the maf signal. However the S4 maf and 45# injectors are a good match. Idle and mid are great. Up top gets pretty rich I saw 10.1 on the LM-1 before I adjusted the top end to 11.5. I also adjusted spool up for around 13.5 the k03 chip keeps things around 14.7 until it gets up top. Cold start isn't exactly perfect. It hunts around but no big deal.
I read a corrected 254 g/s at 1 bar on the maf. Haven't logged the maf at 20psi yet!