If youre in the 11's and running stock turbo....
Originally Posted by DCSilvrEvo
I cut a 1.69 first time @ the track with my evo. I ran 12.5@108 and thats because i was untuned. That was also on all season street tires...
So what's the secret? Slip at 6k rpm? Dump?
It was at Rockingham. I havent been but to one other 1/4 mile track in the Evo and that was Fayetteville and it was 30 degrees hotter. (Uphill track for sure). I think I ran 113 mph there with the car acting up.
The 360 whp run on dynojet and Mustang Dyno numbers in my sig where with the JDM MR bov. The boost was turned up, but the valve leaks at about 24 psi. I could unhook my wastegate and only get 27.5 psi of boost (peak/spike).
The 118 mph runs were with the Greddy Type S with both springs and the BOV tightened very tight, so it wasnt leak at all if any. The 12.04 run I made at 114+ mph at the Rock was with the JDM MR BOV and untuned. I think that MPH is more indicative of the power the car makes with the leaking BOV.
I am pretty sure, with the HKS SSBOV I have on the car now, I can obtain the 118+ mph runs. We will see shortly.
BTW, my friend was with me at Rockingham and Fayettevile in his 2g DSM. He ran 115 mph at Fayetteville and 116 mph at the Rockingham. They were showing to be within 1 mph of each other.
I always run pretty close to the same MPH in the 1/8 mile no matter what track I run. ~89.4 mph tops.
Sorry... Sort of off topic. However I am 99% sure I will run 11.99 or better on my next trip, if I can get a good run.
Oh yeah 29 mph in the back half is nice. All 4th gear and pulling strong and smooth.
Brian
The 360 whp run on dynojet and Mustang Dyno numbers in my sig where with the JDM MR bov. The boost was turned up, but the valve leaks at about 24 psi. I could unhook my wastegate and only get 27.5 psi of boost (peak/spike).
The 118 mph runs were with the Greddy Type S with both springs and the BOV tightened very tight, so it wasnt leak at all if any. The 12.04 run I made at 114+ mph at the Rock was with the JDM MR BOV and untuned. I think that MPH is more indicative of the power the car makes with the leaking BOV.
I am pretty sure, with the HKS SSBOV I have on the car now, I can obtain the 118+ mph runs. We will see shortly.
BTW, my friend was with me at Rockingham and Fayettevile in his 2g DSM. He ran 115 mph at Fayetteville and 116 mph at the Rockingham. They were showing to be within 1 mph of each other.
I always run pretty close to the same MPH in the 1/8 mile no matter what track I run. ~89.4 mph tops.
Sorry... Sort of off topic. However I am 99% sure I will run 11.99 or better on my next trip, if I can get a good run.
Oh yeah 29 mph in the back half is nice. All 4th gear and pulling strong and smooth.
Brian
Originally Posted by Warrtalon
Don't forget, that's at downhill Rockingham. I used to get those 113+ mph times that I mentioned on my other thread on a 1G with a small 16g/FMIC/SAFC on a stock, original engine with 100k+ miles. I never hit 113mph at any other track, though. 360whp on a Dynojet is not enough for over 118mph, so I think the track was running fast while being slick, just like what I experienced when I used to go there (never could hit a 1.6x 60'). If I can hit 12.22@109.2 on a 1.75 60' while you hit 12.24@118.4 on a 1.86 60', I think there is an obvious factor involved there that comes down to the track itself. If you give me a 1.86 60' but an extra 9mph, I'm going to be in the 11s easily, no doubt.
Brian, have you run 118+ at tracks other than Rockingham? I haven't read enough of your threads to know for sure. If these MPHs are at a different track, then disregard, but I think I recall you saying these were at Rockingham...
Oh, I almost forgot. Gaining 29mph in the back half on a stock turbo is INSANO!! Wow, that's gotta feel like a raped ape, because that's the sort of stuff GT35Rs do. I was hitting the same 1/8th-mile MPH as you (88.6-89.5) on my little set of mods, but I was only gaining 22-23 in the back half...
Brian, have you run 118+ at tracks other than Rockingham? I haven't read enough of your threads to know for sure. If these MPHs are at a different track, then disregard, but I think I recall you saying these were at Rockingham...
Oh, I almost forgot. Gaining 29mph in the back half on a stock turbo is INSANO!! Wow, that's gotta feel like a raped ape, because that's the sort of stuff GT35Rs do. I was hitting the same 1/8th-mile MPH as you (88.6-89.5) on my little set of mods, but I was only gaining 22-23 in the back half...
Originally Posted by TURBODAWG
The 360 whp run on dynojet and Mustang Dyno numbers in my sig where with the JDM MR bov. The boost was turned up, but the valve leaks at about 24 psi. I could unhook my wastegate and only get 27.5 psi of boost (peak/spike).
The 118 mph runs were with the Greddy Type S with both springs and the BOV tightened very tight, so it wasnt leak at all if any. The 12.04 run I made at 114+ mph at the Rock was with the JDM MR BOV and untuned. I think that MPH is more indicative of the power the car makes with the leaking BOV.
Brian
The 118 mph runs were with the Greddy Type S with both springs and the BOV tightened very tight, so it wasnt leak at all if any. The 12.04 run I made at 114+ mph at the Rock was with the JDM MR BOV and untuned. I think that MPH is more indicative of the power the car makes with the leaking BOV.
Brian
Was the type S giving you issues? Asking because I was going to get one but if it can't hold boost then it won't help me. Any stalling with both springs? I thought the spring mod was necessary to avoid stalling but not sure how much boost it'll hold.
I tried the 1g, hks, and turbo xs rfl bov and out of those three the car pulled harder using the turbo xs rfl. The drivability of the turboxs and hkss wasn't as great as the 1g.
Thanks.
Originally Posted by GOKOU
Was the type S giving you issues? Asking because I was going to get one but if it can't hold boost then it won't help me. Any stalling with both springs? I thought the spring mod was necessary to avoid stalling but not sure how much boost it'll hold.
I tried the 1g, hks, and turbo xs rfl bov and out of those three the car pulled harder using the turbo xs rfl. The drivability of the turboxs and hkss wasn't as great as the 1g.
Thanks.
I tried the 1g, hks, and turbo xs rfl bov and out of those three the car pulled harder using the turbo xs rfl. The drivability of the turboxs and hkss wasn't as great as the 1g.
Thanks.
I decided to go with the HKS SSBOV with custom recirc kit (mounted to Greddy upper IC pipe going to HKS hard MAF pipe, but uses the stock BOV hose). The HKS will not leak boost at WOT, unless the seal gets damaged or the valve blows apart. I like to spike high coming off the line to get good torque (sometimes wont hook up in 1st). Thats partly why the 60' time on that run wasnt so good. If you are leaking boost, you are working the turbo harder than it needs to work to make the boost you are running. That means the air is heated up further because you are moving even further out of the turbos efficiency range.
The 1G leaks just a little worse than the JDM MR valve above 24 psi, unless you crush it. Crushed it will hold a little better than the MR, by just a little bit, but the stalling increases some. The car shouldnt pull harder with the Turbo XS valve over the HKS, unless you are VTA with the HKS valve. It will bog going into the next gear slightly (if you have a MAF car), no matter how fast you shift, unless you do a "no lift shift". In that case the BOV never even sees vac to open.
HKS with recirc kit if you want to make sure you never leak boost at WOT. Thats my suggestion.
Brian
Originally Posted by TURBODAWG
It will hold boost if you use both springs and tighten the adjustment screw down pretty good. You can crank it all the way down at the track and it wont leak much at all, but the driveability (on/off throttle conditions) will suffer. I would tighten it up at the track and loosen it up when I left the track. It will stall with both springs unless you have it extremely loose and it will still do it occasionally.
I decided to go with the HKS SSBOV with custom recirc kit (mounted to Greddy upper IC pipe going to HKS hard MAF pipe, but uses the stock BOV hose). The HKS will not leak boost at WOT, unless the seal gets damaged or the valve blows apart. I like to spike high coming off the line to get good torque (sometimes wont hook up in 1st). Thats partly why the 60' time on that run wasnt so good. If you are leaking boost, you are working the turbo harder than it needs to work to make the boost you are running. That means the air is heated up further because you are moving even further out of the turbos efficiency range.
The 1G leaks just a little worse than the JDM MR valve above 24 psi, unless you crush it. Crushed it will hold a little better than the MR, by just a little bit, but the stalling increases some. The car shouldnt pull harder with the Turbo XS valve over the HKS, unless you are VTA with the HKS valve. It will bog going into the next gear slightly (if you have a MAF car), no matter how fast you shift, unless you do a "no lift shift". In that case the BOV never even sees vac to open.
HKS with recirc kit if you want to make sure you never leak boost at WOT. Thats my suggestion.
Brian
I decided to go with the HKS SSBOV with custom recirc kit (mounted to Greddy upper IC pipe going to HKS hard MAF pipe, but uses the stock BOV hose). The HKS will not leak boost at WOT, unless the seal gets damaged or the valve blows apart. I like to spike high coming off the line to get good torque (sometimes wont hook up in 1st). Thats partly why the 60' time on that run wasnt so good. If you are leaking boost, you are working the turbo harder than it needs to work to make the boost you are running. That means the air is heated up further because you are moving even further out of the turbos efficiency range.
The 1G leaks just a little worse than the JDM MR valve above 24 psi, unless you crush it. Crushed it will hold a little better than the MR, by just a little bit, but the stalling increases some. The car shouldnt pull harder with the Turbo XS valve over the HKS, unless you are VTA with the HKS valve. It will bog going into the next gear slightly (if you have a MAF car), no matter how fast you shift, unless you do a "no lift shift". In that case the BOV never even sees vac to open.
HKS with recirc kit if you want to make sure you never leak boost at WOT. Thats my suggestion.
Brian
ive had only one pass at 117, but i had a few at 116.
the only explanation that i can come up with as to why i didnt hit 11's is that i am very down on torque. This is cause i had cam gears and i had them set at -5/-5 and i only made about 250 ft lbs of torque with 300 whp. Also my peak power was pretty high up in the rpm range around 7200 rpm or more. I am also baffled as to why i didn't hit 11's and the low torque is the only thing that i can think of. Keep in mind i only hit 300 awhp on a DD dyno.
also when i ran that 12.09 @ 117 i didnt even hit my best 1/8 time. I only ran a 7.75 compared to a 7.72, but who knows if that would have putm e in the 11s. Also on the runs that i trapped 16 and 117 i powershifted. i hit 114 and 115 a few other times but i did not powershift on those passes.
hope this explains everything.
the only explanation that i can come up with as to why i didnt hit 11's is that i am very down on torque. This is cause i had cam gears and i had them set at -5/-5 and i only made about 250 ft lbs of torque with 300 whp. Also my peak power was pretty high up in the rpm range around 7200 rpm or more. I am also baffled as to why i didn't hit 11's and the low torque is the only thing that i can think of. Keep in mind i only hit 300 awhp on a DD dyno.
also when i ran that 12.09 @ 117 i didnt even hit my best 1/8 time. I only ran a 7.75 compared to a 7.72, but who knows if that would have putm e in the 11s. Also on the runs that i trapped 16 and 117 i powershifted. i hit 114 and 115 a few other times but i did not powershift on those passes.
hope this explains everything.
Ran a 11.995@114.5 w/1.7 sec 60. See my mods in my sig. I posted a thread earlier with the title "A big thanks to garage defeat". It has a link to the video. It was about 90 degrees with around 85% humidity. Not the best conditions for drag racing.
Shad
Shad
I'm retarded.
