Well...since I was last at the dyno(https://honda-tech.com/zerothread?id=269935) I removed the FPR that was lent to me and installed some '97+ Prelude injectors(290cc/min)...lets just say that I was running a little on the rich side:



Here is what I looked like the last time that I was at the dyno and what I look like now...got some nice gains, the CF were both 1.00, temp was 79.99 vs 79.40, pressure was 29.75 vs 29.68.






and here is the pre-HyTech vs current tuned HyTech:



Link to all of the plots, and higher resolution shots:


Austin - who is very tired from his long 1400 mile road trip

 

Very impressive. What type of setup are you running?

 

Everything is listed in detail in the first link...too much to list at the moment.

Austin

 

 

nice

 

Hmmm. It's interesting that you've gained power in the midrange where the stock injectors should still be doing OK, but have no gains in the top end where (from what I've seen) they cannot keep up. Not at all what I expected.

 

nice #

 

What does the Hytec header and exhaust cost? If you do not want to post it, please PM me.

 

Power was made with tuning Hondata setup with the new injectors installed...old setup included Hondata with the stock injectors and an AEM FPR...more tuning=more power.

Austin

 

Currently prices from John at HyTech:
$1300 for the header
$950 for the exhaust with the integrated cat

Current shipping time is 2-3 weeks.

Austin

 

FYI, I looked into the Hytech exhaust a couple weeks ago, he does not have a version available for R's with stock style (length) headers yet, he said it'd be the first of the year before that is available.

 

Ouch!!!!
I guess for the performance gains (NA) it is worth it, but I cannot afford one As much as I love NA,for that type of coin, a decent turbo setup is not much more money

 

to all those who poopoo keihin pintle nozzles, I'm sorry but the better spray pattern [than the disc type nozzle] must give a better mixture quality and the reason you see the low to mid rpm improvements from a better burn at those rpms....




[Modified by Michael Delaney, 11:12 PM 10/14/2002]

 

some of the FI guys tell me that the disc nozzles tend to flutter at high cylinder pressures and stick open as well...anyone else have any injector stories to share? nozzles, drivers, ECU tuning with certain brands, etc.

It's funny. When I looked at Jun's stage 4 N/A crate motor rated at 240-250 ps they sell over on their Japanese website, guess what size injectors they use? it ain't 370's or 440's, I can tell you that....

 

very nice set up

 

austin is da man

 

Hey Austins can ya fill me in? why did you get rid of your Toda set-up?

running stock ITR cams now right?

 

click the link at the top of the page for info on his setup

 

Austin should drop in some Toda Spec A's and call it a day

Nice post, good info

 

tr00 dat!

 

just wondering, what was the max duty cycle on these injectors

 

Sold Toda becuase the parts would not yield the reliable power goals that I had set without upping the compression...this is my daily driver, just turned 40,000 miles on Sunday, can't afford to have something happen to my car, no garage to work on car for increased valve adjustments, to many people were breaking their timing belts, and I realized that with the sale of the parts I could yield a setup that would be just as fast, or faster(which it definately is) than the current setup. I chalked the monetary loss that I had to a "learning experience" and I don't regret making the decision to purchase the cams initially(although it was a rash decision) and then to sell them.

The stock cams prove to be working quite well with the proper selection of supporting parts, and tuning...the most important part is still tuning.

Austin

 

Don't tempt me Chad...and it's not like I haven't thought of it either. Though it's just not what I want at this time.

Austin

 

Booya! Looking good!

What do you anticipate the reaction at the track to be with this further testing?

 

very good power austin!

good gains on those mods...

and plus, ur engine is more reliable than with those todas...
ahh, maintenance!