TTP HIAG 2400cc injectors tested E85 TS 3586 Stock Motor!
Oct 27, 2009, 10:44 PM
#1
TTP HIAG 2400cc injectors tested E85 TS 3586 Stock Motor!
So our new test HIAG 2400cc high impedance injectors were received today and we wasted no time getting them in one of our project Evo X's.
Due to the reverse location of the intake manifold and fuel rail on the Evo X versus the Evo 8-9, injector installs are cake. This car was no exception.
With the removal of two 12mm bolts from the rail and carefully removing the insulating spacers the fuel rail can be pulled back. In this case our project Evo X was already equipped with 900cc injectors with adapter harnesses. We swapped them out for our TTP HIAG 2400cc units and they went in as anticipated. Our new injectors do NOT require the adapter harness that the lower flow injectors needed to adapt the Evo X injector harness to the injectors. The OEM Evo X harness clips directly into the HIAG 2400cc units just like stock.
The decision was made to upgrade to larger injectors was in order to move to a fuel with a higher BSFC such as E85. After making the swap and spending a few moments experimenting with gasoline, insuring that the car would idle, run and drive without hiccup on 93 octane, scaling the latencies and sizing, we were able to use the previously tuned pump gas map without any issues. We were soon out of fuel in perfect timing to fill the tank with E85.
After scaling down the injectors for the new fuel with less energy, we were able to turn up the boost to 28-30psi only to run out of fuel on single walbro 255lph HP pump.
Here are the dyno power results:
We also tested the 1320' results to insure fueling, timing and knock was all in check. One of the awesome features of the dyno is its ability to record and document quarter mile WHP breakdowns which will illustrate how the power comes on in each gear as well as what power is made at what speed and RPM when rowing through the gears.
This Evo X as it stands at 3780lbs in the dyno computer ran low to mid 11's and here is how the power looked on that pass:
Our next step naturally is to add a 2nd fuel pump and hit the dyno again with the fuel pressure to support the customer's goals. We have not made a final decision on whether to swap the rod bolts yet as there is no way to measure bolt stretch with an in chassis swap of the bolts.
Last edited by TTP Engineering; Oct 28, 2009 at 08:16 AM.
Oct 28, 2009, 12:54 PM
#5
According to the rules, we cannot disclose pricing in technical threads. I believe the pricing is listed in the Vendor Announcement section though.
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Oct 28, 2009, 06:34 PM
#8
We are deciding whether to install rod bolts or not despite not being able to fit the bolt stretch gauge in there from a bottom up in car install.
Next up is the addition of a 2nd fuel pump boost activated and turning up the boost.
Oct 29, 2009, 07:24 AM
#12
It would be nice if someone released a fuel pump upgrade that still fits in the stock location but delivers 40-50% more than the 255 LPH Walbro. It could even cost $300-$500 and people would still favor that over trying to run a double pumper setup. Something in the 360-380 LPH would just rock! I suspect the FPR would need to be replaced though since that is quite a bit more fuel, maybe Aeromotive has something we can adapt? What about the Nissan GTR R35, are they using twin pumps or a larger upgraded pump?
Last edited by Hiboost; Oct 29, 2009 at 07:35 AM.
Did you guys retune that DOm2 with this yet GST?