7-AFE Custom 4-1 Headers, UPDATE WITH DYNO CHARTS!! 56K Warning Options

[94celicadude]

what kind of gains does the butt dyno show?

well since i drive the car almost everyday, my butt dyno say possible about 5-9hp, maybe more but i am being conservative, so more than likely a little more than that, but only the real dyno will tell. I will post those results once i get them.

[playr158]

very cool looking and nice work, congrats!

btw, Bitter those are not crush bends...they appear to be Compression bends

crush bends create waves, his are smooth

[94celicadude]

very cool looking and nice work, congrats!

btw, Bitter those are not crush bends...they appear to be Compression bends

crush bends create waves, his are smooth

yes, they are compression bends, and thank you for the compliments.

[Batman722]

looks good installed. I would just be concerned about it hanging so low, other than that, I'm impressed. With my header I can feel the diff on the low RPMs and really feel the diff up in the higher RPMs

[slow94st]

dude that is the nicest header i have ever seen, the question i have for u is what size pipe is the actual header and what size collector and what size exhaust.

[94celicadude]

dude that is the nicest header i have ever seen, the question i have for u is what size pipe is the actual header and what size collector and what size exhaust.

the collector is from pegasus motorsports and it is for a 1.6L formula ford, the header tubes are 1.5" with compression bends. thanks for the positive feedback everybody.

This post has been edited by 94celicadude: Jan 21, 2007 - 9:54 PM

[FreddyTheOthaMea...]

Anyone else not able to view the pics?? im at work so that might have something to do with it... :\

[94celicadude]

well here comes the thread from the dead, but just thought id let you all know that im going to dyno and tune tom. i have installed an S-AFCII and i am going to do a base run to see just how much HP the headers alone gave me, then tune and see how much i can squeeze out of a 220k engine. Wish me luck, i will post dyno charts as soon as i can.

[netrata]

Nice Let us know how it turns out.

[94celicadude]

Well, went to the dyno and got the car tuned, didnt get the expected results that we tought we would, but we did get some definite improvements. If you know what you are looking for in a dyno chart or in a power and torque curve, you can notice that the before tuning lines are very wavy and have several bumps and dips in them, but after tuning the lines are extremely smooth and are genrally above the original graph. Sorry if this is all confusing.



*CLIFF NOTES* Made 5 HP and about 5 ft-lbs of torque, from the headers alone, then tuning helped smooth the powerband. MUST REMEMBER THAT ENGINE HAS 216K MILES ON IT!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Before Headers and Tuning


After Headers (Blue Line) and After Tuning (Red Line)


Sorry the pics arent the best, but let me know what you all think.

This post has been edited by 94celicadude: Feb 21, 2007 - 9:04 PM

[Batman722]

so just so we are clear...you got 6 more hp and no additional torque, correct ?

[dagreat1]

hmm wanna make another set?

[94celicadude]

so just so we are clear...you got 6 more hp and no additional torque, correct ?

no torque is kind of hard to read on the graphs cuse my scanner sucks, but actually i made about the same gain in HP as i did in torque, and i was suprised but the engine puts out more torque than it does power, 110 ft-lbs compared to 99HP, which is not typically the way numbers go, especially for imports they "tend" to be higher power than torque. Just my experience and knowledge though.

[Bigmeanbulldog55]

That's not bad. Those are some smooth lines. How is response and what not with yours? I never really noticed that much of a difference in peak hp, just smoother and overall more hp with mine. Mine aren't as long as yours, but they do have the heat rap.

[Rayme]

REALLY nice header!.. but This sadly proves that headers are really not worth the effort on FE heads...but your butt dyno thought you gained 9+ hp..its all about how the car feels in the end no?

This post has been edited by Rayme: Feb 22, 2007 - 12:01 AM

[94celicadude]

thxs for positive comments guys, but dyno really shows the smoothness in the power curve, before tuning we noticed a definite bump in power at about 3700, u can even see it in the graph, and now its just more power, sooner in the powerband, and it stays contantly smooth. Also with the 9lb. lightweight flywheel, its amazing how i just cant get used to having to shift as fast as i need to, it just really goes all the way to fuel cut without a feeling of significant power loss. Once again, thx for + feedback. The engine is getting a rebuild with lots of head flwoing goodies and such hoepfully before too long, trying to get it done before auto-x season start in april. Wish me luck once again.
Matt

[Bigmeanbulldog55]

thxs for positive comments guys, but dyno really shows the smoothness in the power curve, before tuning we noticed a definite bump in power at about 3700, u can even see it in the graph, and now its just more power, sooner in the powerband, and it stays contantly smooth. Also with the 9lb. lightweight flywheel, its amazing how i just cant get used to having to shift as fast as i need to, it just really goes all the way to fuel cut without a feeling of significant power loss. Once again, thx for + feedback. The engine is getting a rebuild with lots of head flwoing goodies and such hoepfully before too long, trying to get it done before auto-x season start in april. Wish me luck once again.
Matt

I had a lightwieght flywheel in my GT, and then I broke it when I missed a shift. It sure is a lot of fun, but I didn't notice that much loss when I went back to stock weight wheel. With those mods, you are talking about an SM car. Maybe not though. I just checked the rules in 06 and it says, "Emission legal modifications to Engine management system, either electronic or mehanical, but not both," is okay for STS classes. I'll have to figure out if this includes S-AFC. It would be cheaper to get a cam gear to try and advance timing though, might have about equal gains.

[Bitter]

the ebay header seems to wakeup around 3000RPM and pull well till redline, my powerband feels like its a little weaker below 2500 rpm and much stronger above it.

actually i was goofing around and accidently bounced off the rev limit in 2nd gear tonight, before the ebay header i'd feel the power dipoff around 5700-6000RPM and know to shift then. Now i dont feel it dropoff at all, infact it really feels like it could go another 500RPM.

This post has been edited by Bitter: Feb 23, 2007 - 12:41 AM

[94celicadude]

thxs for positive comments guys, but dyno really shows the smoothness in the power curve, before tuning we noticed a definite bump in power at about 3700, u can even see it in the graph, and now its just more power, sooner in the powerband, and it stays contantly smooth. Also with the 9lb. lightweight flywheel, its amazing how i just cant get used to having to shift as fast as i need to, it just really goes all the way to fuel cut without a feeling of significant power loss. Once again, thx for + feedback. The engine is getting a rebuild with lots of head flwoing goodies and such hoepfully before too long, trying to get it done before auto-x season start in april. Wish me luck once again.
Matt

I had a lightwieght flywheel in my GT, and then I broke it when I missed a shift. It sure is a lot of fun, but I didn't notice that much loss when I went back to stock weight wheel. With those mods, you are talking about an SM car. Maybe not though. I just checked the rules in 06 and it says, "Emission legal modifications to Engine management system, either electronic or mehanical, but not both," is okay for STS classes. I'll have to figure out if this includes S-AFC. It would be cheaper to get a cam gear to try and advance timing though, might have about equal gains.

actually if u look in the FSP rules and guidelines, youll notice that the 94-99 celicas actually fall in that class, and with the specs on what is allowed, my car fits perfectly, and yea for STS, i already got disqualified once this past season cuse i had clutch and lightweight flywheel, so i had to finish the season with my STS legal GT. Still took second overall, so im happy either way.