Upgraded injectors + cold start = rev hang - Page 7

***soxfan143*** · 02-18-2010, 05:02 PM

Quote:

Originally Posted by mucter

I think a lot of it has to do with the turbo you're using... if it's too large for the engine, then it'll feel peaky as the power rushes on. My car is really easy to boss through corners, I love the torque, it's amazing and very easy to control.

I've also been working on a new throttle map though.... this has given me the ability to have complete control over the torque output in 1st/2nd gear. And a much broader throw of pedal when trying to put down a moderate amount of torque. I'm thinking that it'll be the key to me getting the car down the 1320 on these all seasons.

Yea my car is the same way. The power delivery is awesome.

Quote:

Originally Posted by VitViper

It does depend on the turbo selection, but when you're running 23-25psi on even a small turbo it has quite a kick in the ass, even with throttle modulation (it spools so fast that you go from nothing to OH SHYTE WE'RE MOVING in a split second).

lol..So true.

vtecmike1 · 02-18-2010, 05:30 PM

Quote:

Originally Posted by VitViper

If the S/C setups had a good aftercooler that didn't require running water to it (scary, imo), the S/C setups would be very good options. As it stands right now they are 'meh'. They do however provide very linear power, and as such make an awesome choice for a track car since you're not dealing with the spike in power from spooling a turbo.

the set up for the aftercoolers is the same as say cobras use. and they are very safe and reliable. heat exchangers that use water vs air are way better at cooling.

Supa Ninja · 02-18-2010, 08:01 PM

Quote:

Originally Posted by VitViper

It does depend on the turbo selection, but when you're running 23-25psi on even a small turbo it has quite a kick in the ass, even with throttle modulation (it spools so fast that you go from nothing to OH SHYTE WE'RE MOVING in a split second).

I second that!

wrecked · 02-18-2010, 09:14 PM

just another thing i have to add to my list of stuff that needs to be done to my car.

***VitViper*** · 02-18-2010, 09:21 PM

Quote:

Originally Posted by vtecmike1

the set up for the aftercoolers is the same as say cobras use. and they are very safe and reliable. heat exchangers that use water vs air are way better at cooling.

That may be so, but I'm hesitant to trust it since a leak spells disaster.

skunk2civic · 02-19-2010, 01:46 PM

Just use e85 then .. Like me

***VitViper*** · 02-19-2010, 01:48 PM

Quote:

Originally Posted by skunk2civic

Just use e85 then .. Like me

That would work if I didn't have a 2 hour round trip to fill up on e85.

vtecmike1 · 02-19-2010, 04:34 PM

Quote:

Originally Posted by VitViper

That would work if I didn't have a 2 hour round trip to fill up on e85.

ditto.

45 min for me each way. i'm just gonna do meth i think. its cheaper and more effective then simply aftercooling.

running both would be ideal but i think meth alone will be awesome.

raises octane too so its kinda like mini e85 lol.

skunk2civic · 02-19-2010, 05:20 PM

Haha. I'll be ordering my meth kit soon, and a hondata 4bar map sensor, and smaller pulley, then get it re tuned. My e85 station is 10 mins away.

vtecmike1 · 02-19-2010, 09:02 PM

what injectors are you using again? you'll need very large ones for e85

excited to see your results.

Supa Ninja · 02-20-2010, 12:26 AM

5 min from a E85 pump, got to get the tune first. I'm finally in texas you'all!

Str8JDM · 02-24-2010, 02:33 PM

is this good to do with stock injectors?

***VitViper*** · 02-24-2010, 02:35 PM

Quote:

Originally Posted by Str8JDM

is this good to do with stock injectors?

You shouldn't have to with the stockers.

Str8JDM · 02-24-2010, 02:51 PM

Quote:

Originally Posted by VitViper

You shouldn't have to with the stockers.

reason i ask is because I will be installing a turbo kit with Fuel Injector Clinic injectors in about a month. but because i dont have too much time in the shop, i am trying to do everything i can to utilize as much lift time as i can.

**mucter** · 02-24-2010, 02:52 PM

It won't hurt the car with the stockers, so if you want to do it ahead of time. Go ahead.

Str8JDM · 02-24-2010, 02:52 PM

Quote:

Originally Posted by mucter

It won't hurt the car with the stockers, so if you want to do it ahead of time. Go ahead.

thank you for the quick answer. add that to the pre shop install list

OrdnanceMarine · 02-24-2010, 04:01 PM

Quote:

Originally Posted by VitViper

You shouldn't have to with the stockers.

I beg to differ. This made a huge and immediate difference and I have stock injectors. If you haven't reduced the idle RPM curve at points below the temperature that the assist valve closes then you won't notice the rev hang as much because your engine is reving so high to begin with. If you do adjust the idle RPM at these points then it becomes obvious and was totally fixed by pulling the vacuum line.

***VitViper*** · 02-24-2010, 04:10 PM

Quote:

Originally Posted by OrdnanceMarine

I beg to differ. This made a huge and immediate difference and I have stock injectors. If you haven't reduced the idle RPM curve at points below the temperature that the assist valve closes then you won't notice the rev hang as much because your engine is reving so high to begin with. If you do adjust the idle RPM at these points then it becomes obvious and was totally fixed by pulling the vacuum line.

I never had a problem with the stock injectors, but I felt no need to lower the cold start idle below 1800 back then anyway.

OrdnanceMarine · 02-24-2010, 04:19 PM

Quote:

Originally Posted by VitViper

I never had a problem with the stock injectors, but I felt no need to lower the cold start idle below 1800 back then anyway.

That probably explains it. I'm actually going to bump some of the settings back up ~100 RPM from where I have it as it takes about 6 cylinder compressions to start when the coolant temp is ~50F but only 2 when it is ~100F.

BlueSi4 · 03-02-2010, 04:21 PM

Doing this towards the end of the week, I know Nick is gonna be like "It was about time

"

Thanks guys!

02-20-2010, 12:26 AM	#131 (permalink)
Supa Ninja Senior Member Join Date: Sep 2008 Location: Log Squad #2 Age: 37 Posts: 8,668 Nick	5 min from a E85 pump, got to get the tune first. I'm finally in texas you'all! Last edited by Supa Ninja; 02-20-2010 at 12:27 AM.

02-24-2010, 02:52 PM	#135 (permalink)
mucter SBD Mode Join Date: May 2006 Posts: 15,276	It won't hurt the car with the stockers, so if you want to do it ahead of time. Go ahead. __________________ becauseHONDA™

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02-18-2010, 09:14 PM	#124 (permalink)
wrecked Senior Member Join Date: May 2008 Location: NJ Age: 23 Posts: 4,741 Jason	just another thing i have to add to my list of stuff that needs to be done to my car.

02-19-2010, 01:46 PM	#126 (permalink)
skunk2civic Under Moderation Join Date: Apr 2008 Location: Lake Charles, LA Posts: 4,018 Chris	Just use e85 then .. Like me

02-19-2010, 05:20 PM	#129 (permalink)
skunk2civic Under Moderation Join Date: Apr 2008 Location: Lake Charles, LA Posts: 4,018 Chris	Haha. I'll be ordering my meth kit soon, and a hondata 4bar map sensor, and smaller pulley, then get it re tuned. My e85 station is 10 mins away.

02-19-2010, 09:02 PM	#130 (permalink)
vtecmike1 Senior Member Join Date: Nov 2007 Location: Simi Valley Age: 29 Posts: 3,950 Mike	what injectors are you using again? you'll need very large ones for e85 excited to see your results.

02-24-2010, 02:33 PM	#132 (permalink)
Str8JDM Senior Member Join Date: Oct 2009 Location: NYC Age: 26 Posts: 5,287 Full Race FA5	is this good to do with stock injectors?

03-02-2010, 04:21 PM	#140 (permalink)
BlueSi4 Senior Member Join Date: Apr 2007 Location: New Yawk Age: 25 Posts: 42,499 Oriol	Doing this towards the end of the week, I know Nick is gonna be like "It was about time " Thanks guys!

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