I did, I never really paid much attention to the injector until I talked to Paul from Yaw Power. After I built that bench and tried a few injectors I realized how big of a difference they could make. I ended up using low impedance Bosch 1600's for their spray pattern and linear flow rate up to fairly high pressures. I have heard great things however about the new 1000cc injectors, I haven't got a hold of a set yet but I trust Paul's judgment he has a lot more experience with injectors than I do.

I did learn that published dead times are a complete joke, you might as well put random numbers in there.

 

the ID 1000's are no joke, they are better than any other injector i have ever used....hands down. i dont understand why people are still using anything else.

i seriously get frustrated when i use other injectors now when something comes in for a tuning appointment LOL it really is a night and day difference.

 

The biggest joke is all the people using resistor packs and low impedance injectors talk about a shitty band aid. The 1600 low impedance work great with a good peak an hold driver like the M800 has but put them on an AEM with a resistor pack and now you might as well have bought some machined crap right off ebay.

 

yea 1600's are pretty terrible. unfortunatly have not used a good ecu with a set (i have (8) 1000cc injectors with my m800). but going from a resistor box to a FJO driver is a whole new world.

im anxious to try out the ID 2000cc injectors. if they are half as good as the 1000's....they will be about 30x better than your standard 1600's lol

is your motec set up on a s2000?

 

It is true that all dynos do read differently a stock ap1 s2k will make roughly right around 200-205whp on my dyno. On thing you have to remember is that you have to look at the lbs per air using typical rule of thumb 10lbs of air per minute equates to a hundred hp I to thought this was maxing the turbo out and it was I origainlly thought the car would produce right at around 620 with the turbo maxed out but with the way I set this engine up I wanted to be able to make power well pass the 9500rpm mark. Proper degreeing of the camshafts will yield you this. If you push 60Lbs of air though an engine that only spins to 5000rpm you will have smaller peak #s. if you push 60Lbs of air at 10000rpm you will essentially have twice the amount of hp but less torque giving you that big peak # that is the case hear. this is not exactly true but just using it to try and get my point across. The higher the engine revs the bigger peak # you will make. Also the #s on the garrets compressor maps are very conservative and we are also dealing with one of the most effiecent engines
made to date. Also going into an engine and building the engine to be most efficient for turbo application just increases ve.

As for the fuel pump I knew we were out but because we were running methanol injection and c16 fuel we were able to maintain a close enough fuel ratio to still be safe. The car went a little lean for my taste so we backed the car down to 24psi of boost.

Dynos are used for just #s and tuning. If we could some how make dyno to read brake specific fuel consumption and have the exact volumetric efficiency of the engine and it components we could simply figure exactly how much power the engine should produce. I hate all the d--k waivers out there that post about how much power they make. the real test is 1/4 mile or acceleration times post thoughs screw dyno #s to many dam bench racers in society now

The 4088 turbo sucks, scrap it and go with 4094 you will see much better results. the compressor map is horrible on the 4088 and I do think that it did come from some sort of diesel truck. The 4094 is what we run on are turbo kits for our nsxs the 4088 is great if you want to stay in the 500s anything more than that it sucks. you would be better off with the 35r or the new 37r that just came out have yet to use this one yet though. Nice setup with the Motec I wish I could do this for all of my customers. Nothing like being able to monitor everything I love it

 

Just outta curiosity, numbers on your NSX, et/mph?

 

As crazy as that sounds, the translation is pretty dead on. I dyno'd 246rwhp on Shawn Church's dynapack and 225rwhp on AutoWave's Dyno Dynamics Dynamometer. Same tune, same setup, within a month of each other. That is a 9% difference.

 

daaaaaaaaamn.

 

Since some people have questioned the overall capability of a "35R" turbo, I would like to mention that there are several Evos running a HTA35R and making over 600AWHP on a Mustang dyno. These numbers are further validated by consistently running low 9s in the 1320.

 

Yes

Not only is that not true its not even close lb/min of air can be directly correlated to hp regardless of rpm. 60lb/min at 5000 rpms and 60lb/min at 10000 will be the same exact hp assuming the same thermal efficiency which would be extremely close depending on engine design it could be a few % different but not 100% different like you state is the case.

Assuming you can continue to fill the cylinders with the same volumetric efficiency (maybe what your getting at) you will make more power with rpm at an almost linear relationship. However since a 35R can only flow X amount of air you will not continue to make power with RPM in fact you will start to lose power even though you are still flowing the same about of air but loosing power at the top end of your pull because your efficiency is going down. By your theory you should be climbing at a linear rate until the rev limiter.

Um... if you have a dyno and can't figure out how to do that I don't really know what to say. I don't even need a dyno to do that it's logged in my ecu a few posts earlier.

I have 7 sensors, a dyno, and a spreadsheet that prove without any chance of debate that that's not true. You can make higher peak numbers with a 4094 but at the sacrifice of your map/emap ratio and egts. The 4094 is a band aid Frankenstein turbo for people that can't fit a 42 and want more power than a 4088. The compressor/turbine wheel combination is awful especially for our application. You should NEVER be maxing out a turbo on a setup. Once EMAP > MAP you should be stopping, on a good setup you should be able to stay above 1.05 MAP/EMAP if you look at my setup it's about 1.15 MAP/EMAP at peak power.