N-Tune
01-18-2014, 10:55 PM
#571
Burning Brakes
01-19-2014, 01:47 AM
#572
Addict
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Small Business Partner
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The pre 85.5 DME will not work, under any circumstance.
Progressing..
01-19-2014, 09:07 AM
#573
4th Gear
Join Date: Jan 2014
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Thanks for answers. Necessarily buy before May, had time to come to me the beginning of June to competitions. It is even possible that at the end of this month. I can not decide what to buy springs with torsion or your set.
01-20-2014, 09:49 PM
#575
Burning Brakes
01-20-2014, 10:34 PM
#576
Pro
You only have to buy a late computer because Rogue will provide you with the rest.Remember,try to get a 28 pin dme or you have to send it to Rogue for 24 to 28 pin conversion.
01-20-2014, 11:07 PM
#577
Burning Brakes
I am planning on waiting to see how Rogues replacement dme works out before I go ahead with n-tune on my early car. If I have to buy a dme, it may as well be a new one, right?
01-21-2014, 01:46 AM
#578
Today I got
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My Custom Title
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01-21-2014, 11:36 AM
#579
Intermediate
01-30-2014, 07:31 PM
#582
4th Gear
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I saw that on the site you can buy. When paying even take 20 dollars for shipping. I live in Russia and not sure what $ 20 can deliver a parcel to me. Approximately what I have asked Joshua.
I'm interested in another question. We have factory AFM adjustment screw CO2, as I understand it regulates the fuel-air mixture (correct if I'm wrong), especially on vehicles without oxygen sensor. How does the regulation of CO2 and fuel-air mixture at the MAF-kit with installation on the car without oxygen sensor?
I'm interested in another question. We have factory AFM adjustment screw CO2, as I understand it regulates the fuel-air mixture (correct if I'm wrong), especially on vehicles without oxygen sensor. How does the regulation of CO2 and fuel-air mixture at the MAF-kit with installation on the car without oxygen sensor?
Last edited by Vigner; 01-30-2014 at 11:57 PM.
06-12-2015, 12:37 AM
#583
Rainman
Rennlist Member
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Second thing, the improved exhaust and removing the catalytic converter, there isn't whole lot of power increase, and most of those gains are in the upper-RPMs. I would say it was worth 3-4rwhp. Though with the resonator & 951 muffler it does sound damn good!
Third, we installed the offset camshaft key, which gave a -4° shift in cam-timing. As I mentioned before, this should shift power to the higher RPMs... Well it did help keep HP/TQ up in the higher-RPMs, but was improvement was extremely limited and that was at the expense of lower-RPM hp/tq. The -4° shift only made better hp/tq after 5700rpm; everywhere else it gave up power.
So, we changed the cam timing to provide a +4° shift. This was the ticket! Power everywhere below 5700rpm was vastly improved compared to the previous runs. The drivability improvement and overall acceleration was very noticeable. Even with the advanced cam timing, the upper RPM was improved compared to stock.
Here is the stock vs modified (NA-Tune, 4° advanced timing, "cat-back" exhaust):
peak power stock: 117.6rwhp, 122rwtq.
peak power mod: 132.8rwhp, 142rwtq.
The % gains are ~13% increase in power (+15rwhp), and ~16% increase in torque (+19rwtq).
These mods are easy to do, and can be done for less than $800-900 (NA-Tune $500, offset cam key ~$20 (one pack will do two 944s), exhaust ~$300).
Third, we installed the offset camshaft key, which gave a -4° shift in cam-timing. As I mentioned before, this should shift power to the higher RPMs... Well it did help keep HP/TQ up in the higher-RPMs, but was improvement was extremely limited and that was at the expense of lower-RPM hp/tq. The -4° shift only made better hp/tq after 5700rpm; everywhere else it gave up power.
So, we changed the cam timing to provide a +4° shift. This was the ticket! Power everywhere below 5700rpm was vastly improved compared to the previous runs. The drivability improvement and overall acceleration was very noticeable. Even with the advanced cam timing, the upper RPM was improved compared to stock.
Here is the stock vs modified (NA-Tune, 4° advanced timing, "cat-back" exhaust):
peak power stock: 117.6rwhp, 122rwtq.
peak power mod: 132.8rwhp, 142rwtq.
The % gains are ~13% increase in power (+15rwhp), and ~16% increase in torque (+19rwtq).
These mods are easy to do, and can be done for less than $800-900 (NA-Tune $500, offset cam key ~$20 (one pack will do two 944s), exhaust ~$300).
my car, stock with early dme/afm:
121.6/128.1
large NA-tune housing, 55lb inj dialed in more, +2 cam advance, under-manifold stuff refreshed:
133.4/140.0
i have a totally stock NA exhaust system, head flange to tip, with exception of CA-legal replacement catalyst installed (vs josh with no cat). and i only ran 2 degrees advance today and got practically the same numbers as josh did...so if i tried 4 degrees and maybe the 951 muffler i might be able to squeeze a few more out.
(the blue line is my previous best run with the large MAF housing and the better injectors, but stock cam timing, so it shows you how much the cam timing really gains)
