Quote:
Originally Posted by BOND007_LTK
So I got the OFT, then the crawford power blocks, and now I have gruppes UEL catless, all of which were tuned for the appropriate mod.
The last addition of the catless, I don't think it was as significant as increase as the BPB. THE BPB were a significant difference.
Of course, arguably, the header + OFT would be a significant difference from the OFT itself. That being said, maybe BPB and headers together don't make too much a difference, maybe someone can chime in?
Either way, BPB with OFT was pretty good.
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Hmmm interesting. I did this:
OFT 93 tune for stock header - pretty noticable difference in smoothness, tip in throttle 'aggressiveness', and a nice but subtle bump in power
OFT stage 2 93 tune + P&L catted EL 4-1 header - a pretty big difference in power, both in delivery and quantity, over just the OFT. Got rid of torque dip and provided a nice bump in torque 3500-5000 and then again 6500+. BUT it took a few drives for it to really feel good in day to day driving. ECU needs to adjust.
just recently, added BPB to the above combo, with timing mods per Shiv's post, first driving I noticed a small difference but was a little disappointed (also had someone riding in car with me). But over next couple of days as ECU re-adjusted for part throttle etc. I noticed a pretty significant difference - not quite as much as adding the headers but a good jump. Car feels more urgent now 3000+ and around 5500+ you get a nice surge toward redline. I don't even really notice any drop-off past 7000.
Not sure how long you've been driving this setup, but drive it around a bit and see if it improves. Other factors can influence as well, like temperature, added weight from passengers, or even your mood
Also it's possible you may be able to optimize cam/ignition timing a bit for your combo, but unless you know what you're doing with that, it would require a custom tune (from Shiv, who is hard to get a hold of these days I think).
Lastly headers, especially UEL, really shine in the low end. You shouldn't have much of a torque dip at this point, and you probably won't experience quite the gains in the upper mid RPM that you felt with the BPB's. But you should feel a significant bump in the lower mid RPM band (3000-5000).