Ted B. Tuned - 2.0L Twinscroll HTA3582R 93oct
Mar 20, 2010, 02:39 PM
#1
Ted B. Tuned - 2.0L Twinscroll HTA3582R 93oct
This is my own personal car. Mods are in my signature. If anyone wants to read through the odyssey that brought things to this point, it can be found here:
Ted B.'s HTA3582 Twinscroll Project
In short, this is a personal toy car that infrequently leaves the garage and may never see a dragstrip. It is full weight, leather seats, AC, satellite radio, etc. The object of this effort is to spool the big turbo quickly and extract the best possible transient response and real-world street punch with minimum compromise to reliability and longevity.
This car will rarely see anything other than E85, but here are the results of my 93 octane base tune. All data is from VDR5.7, Dynojet setting and enough smoothing to eliminate bumps and wiggles.
Quick and dirty 27-28psi:
After a cam timing adjustment and a bit more boost (but 20 deg warmer weather), we get this:
A comparison:
Note that 200whp mark is crossed at 4000 rpm. This is always a reliable indicator of spool characteristics. Also, knock count = 0 across the board for both these runs. This is a safe, trouble-free 93 octane tune.
Is there more power in it? Yes. However, I'm not willing to find out how much power I can eek out of 93 octane. I am more than satisfied. If I were a vendor and wanted to use this to promote my business, I might feel differently.
Also, the cams are a high lift (e.g. >12mm), short duration profile. They have a little less effective duration than a Kelford 272, so they are not intended to set peak power records. It's more of a street/rally profile. If I tossed in a set of longer duration cams, peak power would go up, but at the expense of spool, and I don't want that.
Twinscroll rocks.
Ted B.'s HTA3582 Twinscroll Project
In short, this is a personal toy car that infrequently leaves the garage and may never see a dragstrip. It is full weight, leather seats, AC, satellite radio, etc. The object of this effort is to spool the big turbo quickly and extract the best possible transient response and real-world street punch with minimum compromise to reliability and longevity.
This car will rarely see anything other than E85, but here are the results of my 93 octane base tune. All data is from VDR5.7, Dynojet setting and enough smoothing to eliminate bumps and wiggles.
Quick and dirty 27-28psi:
After a cam timing adjustment and a bit more boost (but 20 deg warmer weather), we get this:
A comparison:
Note that 200whp mark is crossed at 4000 rpm. This is always a reliable indicator of spool characteristics. Also, knock count = 0 across the board for both these runs. This is a safe, trouble-free 93 octane tune.
Is there more power in it? Yes. However, I'm not willing to find out how much power I can eek out of 93 octane. I am more than satisfied. If I were a vendor and wanted to use this to promote my business, I might feel differently.
Also, the cams are a high lift (e.g. >12mm), short duration profile. They have a little less effective duration than a Kelford 272, so they are not intended to set peak power records. It's more of a street/rally profile. If I tossed in a set of longer duration cams, peak power would go up, but at the expense of spool, and I don't want that.
Twinscroll rocks.
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Mar 20, 2010, 11:44 PM
#13
My car is doing well. I just pulled it out of hibernation and I am having it revamped for a few changes and some other work. But this is Ted's thread so lets keep it on his beast. Maybe Ill make a thread about my car. I don't know. I really have not said much lately.
