When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Race fuel at the track or on the street? What happens if the fuel pump fails during a run? I don't think there is a way to take that into account.
Both if you're going to be pushing the car to its limits.
There are ways to retarding boost when fuel pressure drops.
You have to have a fuel pump. You don't have to have a meth pump.
I've run meth for several years, although in the back of mind I know how easily a meth setup can fail.
I already use the IAT table to pull timing in the upper flow/upper IAT area but I've been reluctant to use the IAT injector flow rate table to add fuel because it's just one row and I know I'll see ~120 degree IAT's in the summer while sitting in traffic. I suppose it's better to let it go rich in that situation and let the fuel trims fix it to add that additional safety level.
I was searching for the Fuel Enrichment vs IAT and apparently I don't have that parameter in my 1999 operating system. I have the upgraded 3 bar OS but the IAT enrichment doesn't appear.
Is there anything that I can do to gain this option? I already pull a lot of timing if there are high IAT temps, but it would be nice to be able to add some fuel to make up for the loss of methanol.
Man that is a ton of meth for that amount of time r a ton of in boost one...:Glad you can tune her now, wish I could take the time to take a class and do it. Then we cant blame any one but ourself.lol:
Had the f-1c at 24psi but just upgraded to the f-2. Just came back from a little tuning with new setup.With the f-1c at 6600rpm's i was at 24psi now with the f-2 at 5700rpm's i'm at 26psi of boost and started to poop my pants HOLYSH$T i should of upgraded along time ago. The way my car is hitting i don't thing i ever have to take it past 6k rpm to SH$T my pants. My meth turns on at 7psi duel 15 nozzles pinned at 8 on the alky dial.
Both if you're going to be pushing the car to its limits.
There are ways to retarding boost when fuel pressure drops.
You have to have a fuel pump. You don't have to have a meth pump.
I've run meth for several years, although in the back of mind I know how easily a meth setup can fail.
I see what you are saying, but for me, meth and a wideband are non-negotiable. I typically drive 40 miles to the dragstrip so race gas is out and I don't care to spend the money on it. Doing a test hit watching the wideband has saved me many times. One time I was hitting some cells that I hadn't hit before and going lean and another time I didn't have enough fuel in the tank. I credit the extra fuel and octane from the methanol for keeping it alive.
Originally Posted by Arun@CCP
The new piggy back Haltech allows you log meth pessure and fuel pressure and build a safety table in case the pressure drops.
The Haltech is beginning to look more and more appealing.
Originally Posted by 5 Liter Eater
...I've been reluctant to use the IAT injector flow rate table to add fuel because it's just one row and I know I'll see ~120 degree IAT's in the summer while sitting in traffic.
You could use it at the track in a controlled condition, but your setup is already pretty well though out, so it may not be necessary.
What are you doing on C6s? No "Add vs IAT" table for those.
Injector Flow Rate Control / Flow Rate Mult. VS: IAT.
One thing to note is that if you have a scaled tune and/or are up against the IFR limit (63#/Hr) then any of the multipliers won't allow you to exceed that.
Injector Flow Rate Control / Flow Rate Mult. VS: IAT.
One thing to note is that if you have a scaled tune and/or are up against the IFR limit (63#/Hr) then any of the multipliers won't allow you to exceed that.
Yep the car has 63.X across the IFR table already.
First time at the track after replacing the S with a YSi and vacuum lines blew off on 3 consecutive runs (went from 13 psi peak to 25 psi.)
I already relocated the IAT sensor to the intake manifold and add timing starting at 130F and that worked.
3 Problems when the vac lines blew:
Meth fails because boost referenced
Fuel pressure drops because boost referenced and BAP dies too
No Brakes!
I tune my my car but have had help from many here; Bret and Arun for example - many thanks!
One recommendation: zip tie all vac line connections