Walbro 190LPH from Underdog Racing Development

by **Astro** » Sun Apr 11, 2004 10:57 am

Gadget wrote:Email URD about installation. We have several folks out in Cali that assist you with or do the installation for you if you want.

Gadget

www.GadgetOnline.com

Thanks Gadget

by **808Camry** » Fri Apr 16, 2004 11:22 am

I posted this on teamsc3.com and just in case any of you here don't read those forums, my thoughts were to use sound baffleing material used in some custom audio installations to reduce the noise from the pump. Because for me that's a concern, I hate cabin noises!

by **Gadget** » Fri Apr 16, 2004 9:17 pm

If noise is a real concern for you, why not use the BAP? It works, it is completely silent, and it solves the pump problem.

Gadget

www.GadgetOnline.com

by **krook** » Sat Apr 17, 2004 8:17 pm

i've missed out on a lot guys. wow! good job JoeB, and thanks to Gadget for this awesome offer.

someone refresh my memory again: is it necessary to get a fuel pump upgrade if i have a 2.7 pulley?

by **JoeB** » Sun Apr 18, 2004 6:46 am

You should read the information on Gadget's web page. The reason I asked him to help us is the problems they were having with the SC'd 4-Runner sounded very similar to the problems we have with the SC'd 1MZ-FE. I'm convinced that TRD was aware of the problem so they limited boost below ~3500RPM. This is the high gear low RPM problem they mention. I've changed the setup to alow the boost below this since I've upgraded the fuel system. Even if all you want to do is correct the top end, you should read some of the information Jim@ForeignAffairs wrote about our fuel system being inadequate under load. Our pump is only rated at 90LPH and injectors at either 230cc or 250cc stock. The 3188cc injectors and 190LPH pump has been verified by at least a couple respectable sources including RC Engineering. Although they recommended 310cc injectors the extra 8cc is not a problem and they are much less expensive from URD than buying Supra injectors. This is a very long winded "YES". I think there is benefit for anyone with a supercharger to upgrade their fuel system but especially those who have increased the boost. 2.7" pulley = 6.5psi. That is close to the max anyone is running. If money is an issue, I would do the upgrades in this order:
1) fuel pump
2) injectors
3) SS FTC-1
Buying the SC upgrade kit from URD is quite a deal and also includes other very important things like the thermostat and plugs. -JoeB

by **wiz2** » Sun Apr 18, 2004 8:53 pm

JoeB wrote:You should read the information on Gadget's web page. The reason I asked him to help us is the problems they were having with the SC'd 4-Runner sounded very similar to the problems we have with the SC'd 1MZ-FE. I'm convinced that TRD was aware of the problem so they limited boost below ~3500RPM. This is the high gear low RPM problem they mention. I've changed the setup to alow the boost below this since I've upgraded the fuel system. Even if all you want to do is correct the top end, you should read some of the information Jim@ForeignAffairs wrote about our fuel system being inadequate under load. Our pump is only rated at 90LPH and injectors at either 230cc or 250cc stock. The 3188cc injectors and 190LPH pump has been verified by at least a couple respectable sources including RC Engineering. Although they recommended 310cc injectors the extra 8cc is not a problem and they are much less expensive from URD than buying Supra injectors. This is a very long winded "YES". I think there is benefit for anyone with a supercharger to upgrade their fuel system but especially those who have increased the boost. 2.7" pulley = 6.5psi. That is close to the max anyone is running. If money is an issue, I would do the upgrades in this order:
1) fuel pump
2) injectors
3) SS FTC-1
Buying the SC upgrade kit from URD is quite a deal and also includes other very important things like the thermostat and plugs. -JoeB

That is the exact route I'm taking! Pump,injectors,then engine management. Thanks to all the guys that are pushing this platform to the limit.

by **krook** » Mon Apr 19, 2004 8:27 pm

forgive my ignorance due to my absence, but..

what is the "SS FTC-1"?

by **Hsakuragi** » Mon Apr 19, 2004 8:44 pm

split second

by **Vampire** » Tue Apr 20, 2004 12:30 am

One note. You should do the injectors and Split Second Unit at the same time. You'll need it to dial in the injectors. That is unless you have an S-AFC then you can use that.

by **SC V6** » Tue Apr 20, 2004 7:12 am

so are the supra injectors better to own, or are the ones that URD has better? I know the ones that URD has are cheaper, but is it better to run the supra injectors? thanks
scott

by **JoeB** » Tue Apr 20, 2004 7:24 am

Scott, the factors are the capacity, spray pattern and price. The capacity is about the same. I've heard that the Bosch injectors spray pattern is better and the price is significantly better. However, if you already have the Supra injectors, don't replace them, they are fine. -JoeB

by **krook** » Tue Apr 20, 2004 11:54 am

Vampire wrote:One note. You should do the injectors and Split Second Unit at the same time. You'll need it to dial in the injectors. That is unless you have an S-AFC then you can use that.

my S-AFCII unit is broken. what is the difference between that and the Split Second unit? i vaguely remember that the Split Second unit has adjustable settings in smaller increments of RPM levels. also, where can i buy one at?

by **Vampire** » Tue Apr 20, 2004 2:53 pm

The S-AFC and FTC-1 are both fuel calibrators but the Split Second unit also adds the feature of timing retard. There are some problem areas in the rpm curve that can use some retard, especially under boost conditions. The only concern I can see with the FTC-1 is that you have no easy way to monitor your system unless you hook up a laptop all the time whereas the S-AFC has the dbuilt in display. URD has the best deal out there that I know of even if you buy it alone.

krooked Solara wrote:
Vampire wrote:One note. You should do the injectors and Split Second Unit at the same time. You'll need it to dial in the injectors. That is unless you have an S-AFC then you can use that.

my S-AFCII unit is broken. what is the difference between that and the Split Second unit? i vaguely remember that the Split Second unit has adjustable settings in smaller increments of RPM levels. also, where can i buy one at?

by **JoeB** » Tue Apr 20, 2004 5:55 pm

Actually, the SS FTC1 has about the same number of adjustment points on the RPM curve. It goes from 500RPM to 8000RPM in 500 RPM increments. If you count it out, it is still 12 points from 500 - 6000RPM. I've never really checked if you can adjust the range and pull in the points from 6500 to 8000RPM. The S-AFC-II also has 12 points for adjustment. Another major difference though is the SS FTC1 gives you an entire additional plane to adjust fuel on, pressure. You also adjust the fuel from -28.5Hg to 16PSI in .5 increments. I think that is more important because you are adjusting for load as well as RPMs. Then of course there is timing which is very important. As Paul said, the nice thing about the S-AFC-II is the monitoring. I would also add that just about every tuning shop knows how to tune the S-AFC-II and I haven't found any shops that know how to tune the SS FTC1. The link to get the SS FTC1 from URD is
http://www.urdusa.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=0010&Category_Code= they have it for $449. -JoeB

Walbro 190LPH from Underdog Racing Development

Who is online