20G turbo upgrade from Buschur Racing.
We want some # on this turbo.
Jul 27, 2005, 09:09 AM
#62
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Originally Posted by gsujeff55
so, you are saying that the boost gauge is off because its not actually at 0 due to atmostpheric pressure.
what im saying is, my boost gauge was spot on with the DD sensor at the dyno....and i haven't changed the boost and the boost gauge doesn't show anything drastically different at peak or redline....nothing like 5 psi like dave is talking about.
again, maybe im still misunderstanding
what im saying is, my boost gauge was spot on with the DD sensor at the dyno....and i haven't changed the boost and the boost gauge doesn't show anything drastically different at peak or redline....nothing like 5 psi like dave is talking about.
again, maybe im still misunderstanding
Jul 27, 2005, 09:34 AM
#64
Originally Posted by DynoFlash
Its an AEM clitch that the AEM reads lower boost that gauge boost - all AEM tuners are aware of that
Jul 27, 2005, 09:45 AM
#65
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You have to log the sesnor voltage - MAP pressure on AEM and look at your gauge to get an idea what is going on
I can tell you that the AEM boost as reported as "MAP pressure " on the AEM is significantly lower than what a gauge will report
After a while you get used to this
When I say I am running 43 psi of boost - that is AEM boost as my car is too fast to watch the boost gauge and the neddle moves too fast to watch anyway
I can tell you that the AEM boost as reported as "MAP pressure " on the AEM is significantly lower than what a gauge will report
After a while you get used to this
When I say I am running 43 psi of boost - that is AEM boost as my car is too fast to watch the boost gauge and the neddle moves too fast to watch anyway
Jul 27, 2005, 09:45 AM
#66
gsujeff55,
My problem with the stock turbo is that I have to run it as high as 30 psi to get it to hold the 21 psi at redline. If you can hold a nice steady boost curve of 21 psi then that's great. As the engine gets more modified and breathes better you won't be able too. I personally do not pull much if any fuel on alky tunes. I don't feel it is safe to do it, it costs me some power I know but I don't want someone's car to blow up. I usually crank the boost and add timing rather than trying to run it leaner. IF you pull a bunch of fuel with the alky and something happens to the kit it is going to cost you an engine.
I did sell our dyno, but our new MD AWD dyno will be here tomorrow.
David Buschur
www.buschurracing.com
My problem with the stock turbo is that I have to run it as high as 30 psi to get it to hold the 21 psi at redline. If you can hold a nice steady boost curve of 21 psi then that's great. As the engine gets more modified and breathes better you won't be able too. I personally do not pull much if any fuel on alky tunes. I don't feel it is safe to do it, it costs me some power I know but I don't want someone's car to blow up. I usually crank the boost and add timing rather than trying to run it leaner. IF you pull a bunch of fuel with the alky and something happens to the kit it is going to cost you an engine.
I did sell our dyno, but our new MD AWD dyno will be here tomorrow.
David Buschur
www.buschurracing.com
Jul 27, 2005, 09:47 AM
#67
I agree with Al, I tune from the AEM datalogs when I am tuning a car now. The boost gauge usually reads higher than the AEM in every case. Unless a boost gauge is broken I have never seen one read lower than the EMS does.
David Buschur
www.buschurracing.com
David Buschur
www.buschurracing.com
Jul 27, 2005, 09:51 AM
#68
Originally Posted by davidbuschur
gsujeff55,
My problem with the stock turbo is that I have to run it as high as 30 psi to get it to hold the 21 psi at redline. If you can hold a nice steady boost curve of 21 psi then that's great. As the engine gets more modified and breathes better you won't be able too. I personally do not pull much if any fuel on alky tunes. I don't feel it is safe to do it, it costs me some power I know but I don't want someone's car to blow up. I usually crank the boost and add timing rather than trying to run it leaner. IF you pull a bunch of fuel with the alky and something happens to the kit it is going to cost you an engine.
I did sell our dyno, but our new MD AWD dyno will be here tomorrow.
David Buschur
www.buschurracing.com
My problem with the stock turbo is that I have to run it as high as 30 psi to get it to hold the 21 psi at redline. If you can hold a nice steady boost curve of 21 psi then that's great. As the engine gets more modified and breathes better you won't be able too. I personally do not pull much if any fuel on alky tunes. I don't feel it is safe to do it, it costs me some power I know but I don't want someone's car to blow up. I usually crank the boost and add timing rather than trying to run it leaner. IF you pull a bunch of fuel with the alky and something happens to the kit it is going to cost you an engine.
I did sell our dyno, but our new MD AWD dyno will be here tomorrow.
David Buschur
www.buschurracing.com
I don't see how the motor doesn't get choked up with the same fuel and alky coming in there....i know there is more boost, but ****.
also, while on subject and you are letting mepick your brain....can you advance the timing much over stock timing with the alky+26psi spikes of boost holding 22psi to redline. i just wanna know exactly how "safe" my current tune is.
thanks dave!
Jul 27, 2005, 02:13 PM
#71
It's not Elmer FuDge, that's what Elmer has after a night of drinking too much, it's Elmber FUDD
Going to call it the Red Fox, atleast then it will have a chance at catching a rabbit! haha
Just going to call it the EVO 20G upgrade that's all.
gsujeff55,
Jeff, you very easily could have bought that alky kit from us. No offense but sometimes you seem like you want to jump on me pretty easy. I'd be glad to help you with the kit but I didn't sell it to you.
BTW, it's raining here, no track tonight.
David Buschur
www.buschurracing.com
Going to call it the Red Fox, atleast then it will have a chance at catching a rabbit! haha
Just going to call it the EVO 20G upgrade that's all.
gsujeff55,
Jeff, you very easily could have bought that alky kit from us. No offense but sometimes you seem like you want to jump on me pretty easy. I'd be glad to help you with the kit but I didn't sell it to you.
BTW, it's raining here, no track tonight.
David Buschur
www.buschurracing.com
Jul 27, 2005, 05:45 PM
#73
Originally Posted by davidbuschur
It's not Elmer FuDge, that's what Elmer has after a night of drinking too much, it's Elmber FUDD
Going to call it the Red Fox, atleast then it will have a chance at catching a rabbit! haha
Just going to call it the EVO 20G upgrade that's all.
gsujeff55,
Jeff, you very easily could have bought that alky kit from us. No offense but sometimes you seem like you want to jump on me pretty easy. I'd be glad to help you with the kit but I didn't sell it to you.
BTW, it's raining here, no track tonight.
David Buschur
www.buschurracing.com
Going to call it the Red Fox, atleast then it will have a chance at catching a rabbit! haha
Just going to call it the EVO 20G upgrade that's all.
gsujeff55,
Jeff, you very easily could have bought that alky kit from us. No offense but sometimes you seem like you want to jump on me pretty easy. I'd be glad to help you with the kit but I didn't sell it to you.
BTW, it's raining here, no track tonight.
David Buschur
www.buschurracing.com
BTW, i thought you didn't pay attention to who posted what, LOL.
Jul 27, 2005, 06:22 PM
#74
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Originally Posted by gsujeff55
hmmm, it doesn't bog the motor down like that? i mean, if you have gobs of timing added with gobs of boost, if the kit fails, your screwed. I don't think the ECU can pull timing that fast, can it?
I don't see how the motor doesn't get choked up with the same fuel and alky coming in there....i know there is more boost, but ****.
also, while on subject and you are letting mepick your brain....can you advance the timing much over stock timing with the alky+26psi spikes of boost holding 22psi to redline. i just wanna know exactly how "safe" my current tune is.
thanks dave!
I don't see how the motor doesn't get choked up with the same fuel and alky coming in there....i know there is more boost, but ****.
also, while on subject and you are letting mepick your brain....can you advance the timing much over stock timing with the alky+26psi spikes of boost holding 22psi to redline. i just wanna know exactly how "safe" my current tune is.
thanks dave!
tuners in their infinite wisdom tuned the Evo into the 9 / 1 a/f ratio zone with the factory tune.You can run a car and make very decent power with a slightly richer a/f
Especially when you add a siginificant proportion of alcohol the car will run very well on the rich side as alcohol can burn in concentrations twice as rich as gas and make optimal power.
90% of the power from an alcohol kit comes from increased boost and cooling the air intake temps at the manifold. You can also increase the timing slightly but given the higher boost your cylinder pressure is already approaching optimal. Leaning out the a/f is going to add more power - but the increase is very slight and the risk is great.
Prudent tuners leave alcohol tunes rich.
Jul 27, 2005, 06:48 PM
#75
Originally Posted by DynoFlash
Notice that the factory tuners in their infinite wisdom tuned the Evo into the 9 / 1 a/f ratio zone with the factory tune.
You can run a car and make very decent power with a slightly richer a/f
Especially when you add a siginificant proportion of alcohol the car will run very well on the rich side as alcohol can burn in concentrations twice as rich as gas and make optimal power.
90% of the power from an alcohol kit comes from increased boost and cooling the air intake temps at the manifold. You can also increase the timing slightly but given the higher boost your cylinder pressure is already approaching optimal. Leaning out the a/f is going to add more power - but the increase is very slight and the risk is great.
Prudent tuners leave alcohol tunes rich.
tuners in their infinite wisdom tuned the Evo into the 9 / 1 a/f ratio zone with the factory tune.You can run a car and make very decent power with a slightly richer a/f
Especially when you add a siginificant proportion of alcohol the car will run very well on the rich side as alcohol can burn in concentrations twice as rich as gas and make optimal power.
90% of the power from an alcohol kit comes from increased boost and cooling the air intake temps at the manifold. You can also increase the timing slightly but given the higher boost your cylinder pressure is already approaching optimal. Leaning out the a/f is going to add more power - but the increase is very slight and the risk is great.
Prudent tuners leave alcohol tunes rich.