7AFTE Build!, This friday. Options

[nate95]

yes the cut out problem was finlay worked out with the right check valves, and now the car is running better than i had imagined!! it is soo much faster and pulls soo hard, but ya i still have the boost controller problem. But over all, i say the car is purly amazing now .. thanks John!

[Bitter]

how do your plugs look? whats your WOT A/F?

[playr158]

word....told john it was the check valves...

glad you got it runing right

do you have a picture of how your boost gauge is hoooked up ?

This post has been edited by playr158: Oct 13, 2006 - 1:10 PM

[nate95]

i have it hooked up like,, turbo port to boost controler in, then wastegate to boost controller out, and the other port on the waste gate is capped.

[Mynzeyes]

OK, sorry it took so long to upload the pictures. But, uploading 92 pictures onto photobucket takes a while, as you can only upload 20 at a time. Anyway, here are a couple of "teasers", I guess, followed by a link:





Here is the folder: Nate's 7AFTE.

Any questions about any of the pictures, feel free to ask.

[Bitter]

how do your plugs look? whats your WOT A/F?

eh?

[Mynzeyes]

how do your plugs look? whats your WOT A/F?

eh?

Wide-Open-Throttle air/fuel ratio. As per his gauge. Before he left here, at WOT, I believe it was 1 LED into the "rich".

[Bitter]

what kind of guage? blinky-light off the stock narrow band or a real wideband?

those narrowband guages are as useful as a 'one legged man in an ass kicking contest'

a stock 7A-FE will hit 11.2:1 on a wot pull into 3rd gear at the top of the powerband, which is way into rich and beyond the reading of a stock sensor, so if he's just one light into rich on a blinky light he could actually be runinng lean under boost. the stock narrow band sensors consider rich 14:1 and below and are better at reading lean conditions above 14.7:1, additionally heat can skew the readings falsly lean by upto .5 afr points.

i dont mean any insults guys, but i think nate95 needs to be sure and pull his plugs after some hard wot pulls to make sure he's not running lean.

[x_itchy_b_x]

i agree 100% take it too a dyno with a wide band if you dont wanna have to spend the cash, its worth not destroying the motor. but glad to see it boosting.

[Mynzeyes]

oh i know, i told him to get to a dyno asap, but there are none around him. and i also told him that the A/F gauge doesn't do a lot, but at least it gives an idea, somewhat, and it's all we have to go by at this point. in order to get an accurate reading, he needs to go with a wideband. he understands all this, but money does not grow on trees. nor do dynos. the plugs pulled indicated running a little rich, but thta was before we had it running perfectly, so i don't know what they look like now, he'd have to pull them out and tell you himself.

but hey guys, he's working on it, and it can't all be done instantly. the kid's still gotta use some of that money to eat. .

[nate95]

um i took my plugs out and they are alittle black around the ring, so its running rich.

[Bitter]

its not the ring you look at, its the ceramic around the center electrode. that should be off white to tan colored with no white speckles.

i agree 100% take it too a dyno with a wide band if you dont wanna have to spend the cash, its worth not destroying the motor. but glad to see it boosting.

dyno wide bands are OK, but can read 1-2 points leaner than fact if you still have a cat.

[nate95]

theres no white speckles on it either, it looks normal to me, and the other part is tanish in color

[Bitter]

well thats good. so what kind of A/F monitor are you using? wideband or stock narrowband with blinky light guage?

[SpoonR530]

Very very nice work guys. Looks like a proper install, uber clean. With 92 Pictures im glad it was also well documented!!! Oh and i agree dynodynodyno

[nate95]

um ya its just a stock O2 sensor with gauge.

[playr158]

um ya its just a stock O2 sensor with gauge.

so basically all its really good for is a cool light show....find a real wideband and check it out

[Bitter]

um ya its just a stock O2 sensor with gauge.

i mean no offence, but sell that peice of junk and get a wideband. dont beleive me? google up "blinky light guage" and you'll see what i mean.

The Blinky Light meters out there like Cyberdyne, Autometer, and EFI's Dual Meter are perfectly accurate at reading the voltage from the O2 sensor and lighting up the proper LED. The problem with them is when relying on them for full throttle tuning is that the range is not fine enough. There is a huge performance difference between .90v and .96v. Both of those voltages will light up the top most LED on these gauges. The LED based gauges do have their purpose in tuning closed loop/part throttle at a glance. For more accuracy, a digital volt meter is much better. For the best of both worlds, use the digital A/F Ratio meter from Zeitronix

http://www.google.com/search?num=100&h...amp;btnG=Search

[nate95]

"it works for now guys. if you want me to get a wide-band so bad, then give me money for one. this offers a rough idea until everything gets solidly running and smooth, and i can get to a dyno. once i save up money, i can upgrade to a wide-band, but until then, you all will have to cope with what i have for my setup. i'm sorry that i don't impress you all, but i wasn't trying to." my oil leak is more important to fix right now.

[rayneezy23]

video when you have the time