theremikegoes

Hahaha, yeah, hydro lock territory there. I found a 4 cylinder Honda guy that ran 18 gph through an m62 on a 1.8 so I figured I'd push the 4 gph that Devils own suggested. I'm at the point now that a decent amount of fuel is being pulled (tune run and send data to Ryan to fix afr) and I'm considering going to half distilled, half blue washer fluid and doing like 10-12 gph.

What size nozzles are other people running?

theremikegoes

Goofy... I can't speak for his knowledge, but I just couldn't get the piggyback/extra injector to have a smooth afr-I suspect it may have been affected by the giant throttle body and non factory tps. I want to be clear that I didn't run the kit as it came out of the box. That said, the end product of an sct tune by Flyin ryan is great- not the cheapest route by any stretch, but runs amazing and I'm very happy with it.

theremikegoes

Just to clarify... Without that 7th injector, you will want another form of cooling the charge- it gets uncomfortably hot tune wise without it. Methanol injection works great, but it does add complexity and expense. I did the sct/no extra injector without methanol and charge temps were in the 170's pretty quick with ambient at 55.

CobraMarty

The AEM was a fail. I also was told that it would work to run the 7th inj. It would only pulse the 7th inj once per 2 engine revolutions, and oprevious user did not share the programs. It was a complete fail. That is why I had a Split Second box built that will pulse the 7th inj 6 x's per engine cycle (3 times per engine revolution). A more constant extra fuel pulsing. And it retards the timing. The AEM FIC did not work for me and I do not recommend it. You program it as a % of the signal sent to it by the ECU. No direct pulse width programming.

Again I do not recommend the AEM FIC and consider it a complete FAIL.

CobraMarty

Are you calling me "that dude that blatantly lied to you"?

bpas328xi

Wow... You're making me dig deep into my memory. A lot was said 3 years ago and a lot of knowledge was gained and corrected... But, let's give this a shot.

First off, you're bringing up a post that Cobra made that is almost 3 years old. (6/2/12).

Second, I installed the Sprintex around 5/31/12. The Split Second box wasn't installed until 7/11/12.

Third. We were originally going to use the AEM f/ic and were told that it would work. The person that told us it would work (not Cobra) refused to send us his tune to help get us started. Later found out that he was using a completely different method of tuning and wasn't using the 7th injector. Forgetting what his final setup was. At the time Cobra made his post to you, we were under the impression that the AEM would work. Instead of trying to figure out the issues with the AEM and deal with that funky percentages method of tuning, we ditched it and called Split Second and had them build a piggyback that was specific to our application and was designed to control a 7th injector and do so with pulse width. The SS piggyback also pulses the injector 6 times per engine cycle at low RPM to help with homogenizing the fuel with the air.


Lastly, this whole AEM debacle and Sprintex came WAYYYYY before the m62 kit and WAYYYY before we decided to be a distributor for the m62 kit. Our understanding evolved many times before, during, and after the Sprintex install. The m62 kit is tuned with what we had created to work on the Sprintex kit and works flawlessly.

CobraMarty

^^^ What he said.

daveg

Can anyone assist me... I've been struggling with this kit for about a week now. Everything seems to be hooked up correctly but it still makes no boost. My only questionable part is how to hook up the vacuum lines to the bypass valve. Can anyone chime in and help?

CobraMarty

The top port of the bypass valve to any port after the throttle body and before the supercharger. One possible spot is the port where the MAP sensor whet on the stock TB. The lower port of the bypass valve is open to vent. There is a little bit of wiggle adjustment of the bypass valve at the bolts. It needs to move freely and you can test by seeing the valve open when there is vacuum applied and will close when you 'gas it' or just remove the vacuum from the bypass valve.
Hope that helps.
Post a pic if you can.

daveg

Ok I'll try going to the throttle body
.I'll post picks soon if that doesn't work. Thanks

daveg

That did the trick. Thanks

Redbaronxj

Havn't been on here in awhile, just wanted to say still runnin the kit with no flaws. Well built kit for the price. Never got around to adding water/meth one day I will.i did add a iat gauge. temps range from 40s to around mid 100s depending on outside temp.Have seen close to 200 in the trails but thats crawlin around with a lot of heat soak.So not to bad. Has anyone ever checked fuel psi while in a wot pull? Just wondering how much is lost with 7th injector.

subtlez28

I have backed out of my Hemi swap idea (sold my donor truck), and don't like the cost or movement of the TC to accommodate an LS engine...

This is looking like a front runner to make my XJ more fun on the pavement!

CobraMarty

Haven't actually checked or monitored the FP per se, but the AFR stays rich at WOT with the 7th injector. The stock fuel pump is able to keep up at this power level and even up to 12psi and using a 80lb/hr 7th injector. Above this level we are using 255LPH Walbro fuel pumps for safe insurance. Maybe something to put on the list to look at.

spankynz

hi there, do you have the part numbers for the injectors?,im in new zealand and want to buy some injectors for my cherokee,
thanks
vaughan