Dynoed the PFI Turbo kit tonight 325.83HP & 308.69 lbs of torque AF 10.5:1
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Senior Member
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You can't be serious.Originally Posted by BigDogJonx
He sure is.
If that is your oil return you can tell whoever designed your kit that they are grade A idiots and should not be allowed anywhere near a car ever again.
Sheesh
Oh and nice numbers Jay25. I had my car at an A/F of 10.8 for a while. Decided to tune it to 11.2-11.4 for a track day and left it like that. It's not a lot more power but it's there. A wideband is one of the first things i'd recomend for someone with a custom setup. Do a search for techedge, they have good priced ones. I like mine a lot.
Do you have any way of reading the knock or timing advance of your motor? Sorry I never learned a lot about maxima tuning while I had my car.
Ant
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Originally Posted by Redmax
TADA!!!!! That's it!! That's it!!! That is the turbo return line!!!!
on your new setup...you're going to tap the pan right? (at least I hope)
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The motor doesn't know whether the air is getting forced in there via turbocharger, supercharger, or nitrous, it makes absolutely no difference whatsoever. It's the fact that turbos are A) more efficient so they make more power with less boost pressure, and B) easier to get greedy with and go for that extra 1psi that the fuel system can't handle, they lean out and blow. It's got nothing to do with the method of induction.
It does make a difference. With a turbo peaking at 9 psi, the engine sees 9 psi from whenever max boost hits, say 3500 rpm, all the way until redline. With a SC peaking at 9 psi, you get maybe 2-3 psi at 3500 rpm that builds to 9 psi at redline. That's a big (huge, really) difference in fuel consumed and heat input into the engine. That's exactly why turbo'd Maximas are faster than SC'ed Maximas, and most likely why some of the turbo guys had problems. Be careful, Jaime.Originally Posted by Nealoc187
The method of induction has nothing to do with blowing the motor. The people that have "blown" motors did not have their motors fail because of the strength of the internals, the motors blew because they ended up too lean. The internals of this motor will handle over 400hp without a problem, it's when people run too lean that motors blow.The motor doesn't know whether the air is getting forced in there via turbocharger, supercharger, or nitrous, it makes absolutely no difference whatsoever. It's the fact that turbos are A) more efficient so they make more power with less boost pressure, and B) easier to get greedy with and go for that extra 1psi that the fuel system can't handle, they lean out and blow. It's got nothing to do with the method of induction.
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What do you mean be careful? You know your stuff, so can you explain please?Originally Posted by Stephen Max
It does make a difference. With a turbo peaking at 9 psi, the engine sees 9 psi from whenever max boost hits, say 3500 rpm, all the way until redline. With a SC peaking at 9 psi, you get maybe 2-3 psi at 3500 rpm that builds to 9 psi at redline. That's a big (huge, really) difference in fuel consumed and heat input into the engine. That's exactly why turbo'd Maximas are faster than SC'ed Maximas, and most likely why some of the turbo guys had problems. Be careful, Jaime.
Got me all nervouse now. I am @ 9.7PSI, I let off before 6600RPMs if you look at my dynos they fall off around 63-64K. Fuel is alright for now.
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Got me all nervouse now. I am @ 9.7PSI, I let off before 6600RPMs if you look at my dynos they fall off around 63-64K. Fuel is alright for now.
Well, maybe I'm just overly cautious, but I hate seeing you guys blowing engines. Right now your afr is pretty conservative, which is a good thing. If you raise afr, keep an eye on EGT, and some sort of extra detonation prevention would be good. I think Mardigrasmax set an excellent example by going with the J&S Safeguard. Keep in mind that JWT tunes to 11.5:1, and they've got quite a lot of experience to base their tuning on. Freer flowing exhaust helps quite a bit to keep EGT down, too, so your plan on going to a 3" exhaust is a good one.Originally Posted by JAY25
What do you mean be careful? You know your stuff, so can you explain please?Got me all nervouse now. I am @ 9.7PSI, I let off before 6600RPMs if you look at my dynos they fall off around 63-64K. Fuel is alright for now.
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Originally Posted by Stephen Max
Well, maybe I'm just overly cautious, but I hate seeing you guys blowing engines. Right now your afr is pretty conservative, which is a good thing. If you raise afr, keep an eye on EGT, and some sort of extra detonation prevention would be good. I think Mardigrasmax set an excellent example by going with the J&S Safeguard. Keep in mind that JWT tunes to 11.5:1, and they've got quite a lot of experience to base their tuning on. Freer flowing exhaust helps quite a bit to keep EGT down, too, so your plan on going to a 3" exhaust is a good one.
ooh that, I am already been cautious. I was taking the biggest crap at the Dyno. The AF computer was reading 10.5:1 after 4K, I know it leans out more after 6K, I am not worried about it. 3 inch exhaust Ill get that later. Have to find a quiet exhaust like this Greddy I have. I have the quietest exhaust out of all the boosted maximas here in Atl
I am happy my car does not make much noise aside from the wastegate.
Senior Member
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I am boosting 9.7PSI, turbo is a T4/T04E, vortech FMU 8:1 FMU disk, SAFC, Walbro fuel pump and this is Nigels PFI Turbo kit
, Thanks Nigel for this sweet kit
http://bigdogjonx.net/fullpics/dyno/Jay25turbo/run5.jpg
10.5 from 4000-redline, was my fuel ratio. I gave myself some cushion since it spikes up to .7 PSI. Did it only once but I am better safe then sorry. I am also not all that greedee for power. Believe me 308lbs of torque is plenty of torque. Pulled on a 300Z TT with big mufflers on it today
still in disebelief I did that. Even the driver pulled his windows down to talk but traffic was heavy. I want to say thanks to Dixit (BigdogJohnx) for the help and for uploading these Jpegs to his site and for hooking up that computer to my car. I could not have dynoed my car with his help since I did not have a Chart had a digital AF thing that reads off the numbers to you. My little brother for making sure the MEVI was working etc..
One more question how do you guys figure out what kit puts out best number PSI for PSI?
base run with broken MEVI
http://bigdogjonx.net/fullpics/dyno/Jay25turbo/run1.jpg
started adjustments
http://bigdogjonx.net/fullpics/dyno/Jay25turbo/run2.jpg
http://bigdogjonx.net/fullpics/dyno/Jay25turbo/run3.jpg
http://bigdogjonx.net/fullpics/dyno/Jay25turbo/run4.jpg
the directory in order is here
http://bigdogjonx.net/fullpics/dyno/Jay25turbo/
Originally Posted by JAY25
Final run after my own dyno tunning myselfI am boosting 9.7PSI, turbo is a T4/T04E, vortech FMU 8:1 FMU disk, SAFC, Walbro fuel pump and this is Nigels PFI Turbo kit
, Thanks Nigel for this sweet kithttp://bigdogjonx.net/fullpics/dyno/Jay25turbo/run5.jpg
10.5 from 4000-redline, was my fuel ratio. I gave myself some cushion since it spikes up to .7 PSI. Did it only once but I am better safe then sorry. I am also not all that greedee for power. Believe me 308lbs of torque is plenty of torque. Pulled on a 300Z TT with big mufflers on it today
still in disebelief I did that. Even the driver pulled his windows down to talk but traffic was heavy. I want to say thanks to Dixit (BigdogJohnx) for the help and for uploading these Jpegs to his site and for hooking up that computer to my car. I could not have dynoed my car with his help since I did not have a Chart had a digital AF thing that reads off the numbers to you. My little brother for making sure the MEVI was working etc..One more question how do you guys figure out what kit puts out best number PSI for PSI?
base run with broken MEVI
http://bigdogjonx.net/fullpics/dyno/Jay25turbo/run1.jpg
started adjustments
http://bigdogjonx.net/fullpics/dyno/Jay25turbo/run2.jpg
http://bigdogjonx.net/fullpics/dyno/Jay25turbo/run3.jpg
http://bigdogjonx.net/fullpics/dyno/Jay25turbo/run4.jpg
the directory in order is here
http://bigdogjonx.net/fullpics/dyno/Jay25turbo/
whoa!!! man great job... congrats.., u must be really happy for that lol...
i wish my max was that fast... ill get their in time and with more $$cash$$ haha i wish lol have fun w/ it man
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See what you would be missing, keep the BOOST!!Originally Posted by Max4Speed
Nice Jaime! I need to dyno tune too. I guess I will need dixit's help too :-D
Jamie great numbers, really makes me want to join the dark side. What is the highest EGT temp that you saw? If you are going higher on the boost have you thought about a water injection system to prevent detonating?
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Jamie great numbers, really makes me want to join the dark side. What is the highest EGT temp that you saw? If you are going higher on the boost have you thought about a water injection system to prevent detonating?
Aquamist & intercooler piping is a Originally Posted by Street Reeper
See what you would be missing, keep the BOOST!!Jamie great numbers, really makes me want to join the dark side. What is the highest EGT temp that you saw? If you are going higher on the boost have you thought about a water injection system to prevent detonating?
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Just don't put it close to the IC. I have mine near the TB.Originally Posted by HitManSE
Aquamist & intercooler piping is a
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Originally Posted by HitManSE
Aquamist & intercooler piping is a
Why is Aquamist and intercooler piping a no no, sorry I am a newb.
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You don't want water collecting in the IC.Originally Posted by spanishrice
Why is Aquamist and intercooler piping a no no, sorry I am a newb.