Ok guys/girls here is the scoop. I live in Osaka Japan and I just bought a 98 Integra type R. The engine mods I have is a Mugen header, 5Zigen race exhaust, Mines computer, AEM cold air intake and an APEXi VAFC. I just got my NOS kit in last week and installed it. I haven’t tested out yet because I don’t want to f#ck anything up. Is there anything I should do as far and tweaks or tuning before I run the NOS? It is only a 60 HP boost and the guy at NOS told me not to worry. Well, I don’t know what to expect cause it is my first time using NOS. I am looking to get a supercharger from Jackson soon and I know I have to retard ignition by 3 degrees. Does anyone have any suggestions on what else I should consider or do?

PS. My mines computer is set only to cut the speed limiter. In Japan, all cars including GT-Rs, RX-7...everything....is limited to 180Kmh (111 Mph) unless you buy a computer to cut the limiter. Everything else is the same.

PSS. Does anyone know a really good setting for the VAFC?

Thanks people...

Gojigen

 

Welcome.

 

I´m from Europe and we have the same engine specs like you JDM guys. Ya know the 11.1:1 compression....... I had the JRSC about 1 Year installed with the stock 5.5 psi running. It is very hard to tune this bitch on the R, cause of some a/f mixture problems. For more infos go to my link to Geocities.

I uped the boost to 8-9psi 2 weeks ago and my engine has blown, cause of the high cr and of the heat which is created from the charger. Too bad there is no intercooler available for this design. When you want bad *** power go Turbo. When you want an increase of about 35-40 % more power go Supercharger. I was happy with my setup but it costs me ALOT too. 3" exhaust, Header, 310 injectors, etc etc etc. I had 200whp with this setup. Now I lower my cr to 9:1 and I´ll boost ~1 Bar to make about 300whp with the Turbo DRAG III kit. YEAH!!!!!!


[Modified by austrian ITR, 4:57 AM 1/26/2002]

 

You should be careful with NOS. If your Air/Fuel ratio is not correct = most of the time too lean because of the N2O, you will burn your pistons and/or valves!!!
NOS + Supercharger = Trouble + more trouble......

 

Hey Christian, I know a guy here with an ITR + JRSC. He wants to try 8 PSI too (now 5.5 PSI). I warned him already.
BTW. His car is from Germany...

 

Do you know how much hp he has? Yeah, tell him it is a MUST to lower the cr, otherwise he becomes some troubles.

 

He thinks about 200 whp. He doesn't know exactly..... How about retarding the timing instead of CR?

 

When he has only the JR kit without any i/h/e, cam gears, air/fuel controler (or standalone) I realy doubt he has that amount of hp numbers. I only had 175whp with only Apexi VAFC.

Retarding the timing is only possible up to an certan point. I was on the dyno (+ wide band O2 sensor) with my 8psi setup and I´m using a Haltech E6K standalone. We had to retard the timing and run a bit richer a/f mixture, cause of detonation problems. But after 0.5 hours cyl. #4 was not firing anymore = zero compression . 3 pistons are totaly melted. The air when it is compressed with 8psi was 85 degrees C hot (measured with the Haltech air sensor. Normaly on an intercooled turbo /SC setup it is only 35 C hot. 85 degs + high compression is too much heat and you have lots of detonation.

My tuner told me, that more than 260-270bhp is not possible with the charger. I know Mikey Marsey has better results but the USDM spec engine has only 10.6:1 cr, the US hp are not equal to Eruro ones and they are dynoing at ybout zero altitude.

Since I need new pistons anyway, I´ll upgrade to 9:1, cause 9:1 or 11.1:1 is the same cost. With the JRSC more than boosting 8-10 psi is not possible, but my engine can withstand ~18psi with 9:1. So why the hell use the JRSC when my engine is preppared to handle way more boost than the JRSC can deliver me.

I have luck, cause my tuner charge me NOTHING for the engine repair and the turbo install, but he gets my JRSC. So I have ordered me JE pistons, eagle rods, DRAG III Turbo kit, APR head bolts, Apexi type-R boost controler

I hope that my car runs in about 2-3 weeks perfect.

 

Only 175 whp? That's what a nearly stock ITR (with intake) can make!!!! What's wrong?
The other guy has a DC 4-1 JDM header and a 3" straight-through exhaust. And a CAI, I think. I don't know what he has more....

 

hehe, my ITR had stock only 151.5whp That was some weak mother)§($er

His car must be loud with a complete 3" exhaust. I have an 3icher too and I had to weld a cat and a midpipe resonator in, cause it was the loudest thing I´ve ever heard.

Go to my Geocities link and check the dyno numbers from the other JRSC ITR guys out. The most guys have about 180whp with the stock kit.


[Modified by austrian ITR, 7:11 AM 1/26/2002]

 

Does anyone know a really good setting for the VAFC?

You can not use settings from other cars. The best and correct VAFC setings will give you a wide band O2 measurement on the dyno. When add nitrous you must also add more fuel. What NOS kit do you have? Do you add the extra fuel with raising the fuel press or do you have a "wet" setup and spraying the extra fuel with fuel nozzels in the intake manifold?

to EuroR: Why you have a Motec exhaust in you sign? it´s a joke, is´nt it?


[Modified by austrian ITR, 7:18 AM 1/26/2002]

 

Yes, his car is LOUD!! Almost as loud as a track ITR......

Motec is not a protected TM, so I can call my selfmade exhaust MOTEC, right. I don't need advertising. It's already very well known....


[Modified by EuroITR1689, 4:23 PM 1/26/2002]

 

http://www.motec.com/

So realy, I hope you get not in trouble. j/k

 

Scheisse!
But they don't make exhausts, so........

 

That is why the guys here at H-T are kidding about Fast and Furious, cause in the movie they are talking about a Motec exhaust, which does´nt exist. haha

 

is it a wetshot?? single fogger?

 

This is the kit I got
http://www.holley.com/HiOctn/ProdLin...S/imports.html

Dry shot

 

supercharger + NOS 60 shot = boom, upgrade your fuel system. When you hit your Nitrous, then come to a stop, your car will probably stall cause you'll be flooding the fuel rail.

 

poo poo you gotta watch your ***..and watch where you tap the noozle..dry shot is known for running number 1 cylinder to lean

 

60 shot dry?

I recommend aftermarket fuel pump....

for sure. Safety first.

I would shoot no more than 50 shot with stock fuel pump.

Jeff

 

Whoa someone in japan using aem. Thats a first I've heard.

 

Yeah, I ordered my AEM from TSR in Seattle. I personally like the intake so I payed for the extra shipping to have it. I havent seen anyone yet with it here

 

Okay lets make a point. It is NOT POSSIBLE to run the JRSC and the NOS kit without work to the bottom end (ie lower compression pistons).

 

There are more than a hand full of Japanese Guys that race that have AEM Intakes over here ....But none of them can speak a lick of english or care to post anything...if you get my drift

 

get your drift--drifting.