headers and intake box

[ROWDYRENAULT]

second video is under Ultima GTR with greg Holamn headers

[UltimaCH]

ROWDYRENAULT said:

once again I have proven my incompetence with computers I posted a video on Utube with the title of Ultima Gtr on dyno with 8 into 1 headers. Tried to put the link on here and it did not work but its there. I have some other videos of different RPM ranges I will try to post. Lee

No worries, here's a link:
https://www.youtube.com/watch?v=f8dUpqEq5N0

[F.C.]

Sounds good, I think the noise from the dyno may be interfering though.
Just looked at the second vid, needs more footage but I think it will be awesome on road.

Edited by F.C. on Tuesday 24th November 10:38

[V8Dom]

sorry is that the tyre noise we are hearing

[ROWDYRENAULT]

yes there is a lot of tire noisein the sound track no way around that on the dyno. working on a driving video. At freeway speeds on cruise throttle the thing is very nice, very livable noise level and the quality is absolutely over the top. lee

[V8Dom]

HAVE YOU ANY STATIC VIDEO

what hp did you loose with over long primaries?

[845ste]

you can just post a video of a standing start to hear the sound. anyway sounds good: not v8 chevrolet but it looks like Ferrari v8

[ROWDYRENAULT]

Lost a few horsepower at the peak put wound up with a much flatter torque and horsepower curve. Torque is now virtually flat from 3500 to 5100 rpm. Horse power only varies by 55 hp from 3900 rpm 6300 rpm. Redline on this engine is 7200 rpm. What the headers did was but a lot more area under the curve by bringing up both the low end and top end with a 5-10hp loss at the very peak. Car is a lot more driver friendly and probably a bit quicker on a road course because you only cross the peak values for a limited amount of time. So if you come off a corner at 3600 rpm yes you will be down a couple of percent at 4200 rpm the old peak but you,ll have greater values everywhere else. lee

[chuntington101]

Lee, have you got any before and after dyno graphs? Be interesting to see the gain and loss points on the curves.

[ROWDYRENAULT]

https://youtu.be/CIu9Gtme9WQ

second gear accel with the new headers. Lee

[2001ultima]

Wow, sounds awesome! Nice job!

[UltimaCH]

Doesn't sound American V8ish at all. Love it!

[F.C.]

[845ste]

wow! sound like than F1

[ROWDYRENAULT]

https://youtu.be/ha3viAtns3w short video at idle

[barpilot]

That. Sounds. Immense.

[V8Dom]

wow... this is what i want in sound

yes...who made the pipes and what did they cost?

[F.C.]

I'm with Dom on this, very tempting.

[845ste]

https://www.youtube.com/watch?v=dnDNqECVt9c

[chuntington101]

It dose sound very nice! But would it not be too loud for UK tracks? How would you quieten it down, as the header is taking up a lot of room normally used by the silencers.