Will I get into the 12s?

[s13sr20chris]

I recently got stuck with some ES-100's (see my post Parts that Suck in 240 General). The ES-100 isn't a very good tire. The ones that I got are V rated and don't grip worth a damn. They might be better than what you are currently running, but they are far from a grippy tire. I wish that I had spent the extra $10 per tire and gotten the Dunlop SP8000s, or maybe some Yokohama AVS Intermediates.

seeing how this is a drag racing thread i should have clarified. i am just looking for a tide me over tire while i am on the stock wheels. i need an all purpose street tire that comes in 205/55r15. so far my choice is the es100. i like them way better than the 712's even though the tread grip is similar. i feel that it is a much better constructed tire. well thats what i gather anyway. i dont actually have experience with the es100, but i sure do know about the 712's.

edit: i really wish i could afford some k1's and yoko sports. thats my ideal all purpose setup. well that or the k1's with potenza s02's(no can find anymore)

[msaskin]

Nice link. I am still contemplating my long time planned setup of the GT25R with 740cc/z32/powerFC with stage 2 264 cams, etc. Just can't decide if I want to spend the money. I am thinking about going with the GT2871R and 550cc and SAFC2 so save cost. Still should make 300-350whp.

I still think the GT2871R is really a compromise turbo. Albeit it's a better choice than the GT28RS, but I still feel that turbo is lacking somewhat.

The GT series turbos (GT25 and bigger) are still awesome. Laggy, yes, but if you look at the compressor map compared to the volumetric efficiency of most 2.0 liter engines, you literally can't come up with a much better turbo. The DSM guys absolutely LOVE the thing.

I'm going a similar route to you: 740cc injectors, GT25R (i'm leaning towards the .64 a/r only because I primarily road race), but i'm going with a speed density setup (AEM EMS). I'm going to have everything installed (including the AEM) in the next few weeks, then the long tuning process begins. I'll see how much power I can make, and if need be, go with some 264 cams in the future. I've got a spare head in my garage that I'll probably do some port work to, and possibly build up (valves, valve springs, etc.) for when I get cams...rev a little more and make the GT25 even happier

Also, even with 550's and the GT2871, using an AFC is going to cost you a lot of horsepower. The more I see tuned SR20's and play around with them myself, the more I realize that this motor (like most others) makes it biggest gains from changes to the timing map. While changing fuel helps a bit with power and can change spool-time dramatically, the bulk of your peak power is going to come from getting the timing curve spot-on. I'd also recommend the power-fc D-Jetro, only so you can ditch the MAF and run speed density instead. Check out http://www.greenline.jp, they're an export service but they quoted me about US$1000 for the powerfc d-jetro w/ the sensor kit shipped to the united states.

~matt

[f150intally]

seeing how this is a drag racing thread i should have clarified. i am just looking for a tide me over tire while i am on the stock wheels. i need an all purpose street tire that comes in 205/55r15. so far my choice is the es100. i like them way better than the 712's even though the tread grip is similar. i feel that it is a much better constructed tire. well thats what i gather anyway. i dont actually have experience with the es100, but i sure do know about the 712's.

edit: i really wish i could afford some k1's and yoko sports. thats my ideal all purpose setup. well that or the k1's with potenza s02's(no can find anymore)

I've got my bf goodrich drag radials, which are 225-50-15 mounted on my stock alloys. The fit pretty well and i cut a 1.7X 60 fts.

[unfrgivn]

ES100s are about the same as Kumo 712s. Have fun spinning 1st, 2nd and 3rd :ylsuper

Even with dropping the tire pressure real low, like say 22-24psi? Damn I bought these tires because everything I read on here said they were lightyears better than the 712's and the best performance tires that you can still run safely on the street in bad rain and such. If they suck, they suck, but I need all weathers on my stock wheels (spend the winter in Albany with lots of snow driving) and in the summer I use my FN01RC's but I still have to drive on the street with LOTS of rain.

Eh I'll take them to the track and see what I can do. Worst case I sping my tires through 3rd gear and have a fun time doing it.

[msaskin]

Even with dropping the tire pressure real low, like say 22-24psi? Damn I bought these tires because everything I read on here said they were lightyears better than the 712's and the best performance tires that you can still run safely on the street in bad rain and such. If they suck, they suck, but I need all weathers on my stock wheels (spend the winter in Albany with lots of snow driving) and in the summer I use my FN01RC's but I still have to drive on the street with LOTS of rain.

Eh I'll take them to the track and see what I can do. Worst case I sping my tires through 3rd gear and have a fun time doing it.

I'd even take the tires down to 20psi. You'll get a feel for it once you're at the track.

~matt

[s13sr20chris]

I've got my bf goodrich drag radials, which are 225-50-15 mounted on my stock alloys. The fit pretty well and i cut a 1.7X 60 fts.

if i come across a spare set of wheels really cheap then thats what i prob will do. i just have to have my street tires to chaufer wife and kid around in. side note: baby not yet born, loves the sound of my exhaust and blow off valve!

[s13sr20chris]

I still think the GT2871R is really a compromise turbo. Albeit it's a better choice than the GT28RS, but I still feel that turbo is lacking somewhat.

The GT series turbos (GT25 and bigger) are still awesome. Laggy, yes, but if you look at the compressor map compared to the volumetric efficiency of most 2.0 liter engines, you literally can't come up with a much better turbo. The DSM guys absolutely LOVE the thing.

I'm going a similar route to you: 740cc injectors, GT25R (i'm leaning towards the .64 a/r only because I primarily road race), but i'm going with a speed density setup (AEM EMS). I'm going to have everything installed (including the AEM) in the next few weeks, then the long tuning process begins. I'll see how much power I can make, and if need be, go with some 264 cams in the future. I've got a spare head in my garage that I'll probably do some port work to, and possibly build up (valves, valve springs, etc.) for when I get cams...rev a little more and make the GT25 even happier

Also, even with 550's and the GT2871, using an AFC is going to cost you a lot of horsepower. The more I see tuned SR20's and play around with them myself, the more I realize that this motor (like most others) makes it biggest gains from changes to the timing map. While changing fuel helps a bit with power and can change spool-time dramatically, the bulk of your peak power is going to come from getting the timing curve spot-on. I'd also recommend the power-fc D-Jetro, only so you can ditch the MAF and run speed density instead. Check out http://www.greenline.jp, they're an export service but they quoted me about US$1000 for the powerfc d-jetro w/ the sensor kit shipped to the united states.

~matt

three letters, AEM! thats my long term plan for engine management(really long term) if i get a my turbo(not 100% decided), 550's, z32, etc. before the aem, i may make due temporarily with an hks afr. the afr is cheap and has more parameters than the safc2. but aem is the way to go IMHO. on your turbo opinions...i think the gt2871r is a solution to the turbo compromise. i think the gt25/2540/etc. is just too extreme. i think its an attempt to make a big power compressor fit on a little turbine. the gt2871r is a little closer to being reasonable from what i understand.

[VitaminT]

I will most likely go with AEM when it comes out. I am getting more and more tired or the idea of buying a $1000-1500 PowerFC D-Jetro w/maf&IAT only to have no laptop tuning/dataloging. Time to save my monies for the AEM + UEGO integrated wideband.

[msaskin]

i think the gt2871r is a solution to the turbo compromise. i think the gt25/2540/etc. is just too extreme. i think its an attempt to make a big power compressor fit on a little turbine. the gt2871r is a little closer to being reasonable from what i understand.

Not necessarily so. The whole point with garrett's design of the GT series turbos is that by using whatever magical material they use for the compressor wheels, it allows them to run extremely mismatched turbine and compressor wheel sizes.

~matt

[180crafter]

I will most likely go with AEM when it comes out. I am getting more and more tired or the idea of buying a $1000-1500 PowerFC D-Jetro w/maf&IAT only to have no laptop tuning/dataloging. Time to save my monies for the AEM + UEGO integrated wideband.

FC Datalogic

[msaskin]

FC Datalogic

Power FC - $1000D-jetro sensors - $250 (face it, speed density is better than MAF)FC-Datalogit - $400Tital - $1650

AEM - Under $1500, way more features than the PFC, way better interface, light years better support...i can go on

Plus you gain tons of features with the AEM - traction control, two-step/anti-lag, flat-shifting, etc.....

~matt

[VitaminT]

I am begining to see the light. Is the flat-shifting where you can clutch/shift without lifting the gas pedal? I know hondata has something like that.

Basically where when the clutch pedal hits a switch it enables a rev limit.

[msaskin]

I am begining to see the light. Is the flat-shifting where you can clutch/shift without lifting the gas pedal? I know hondata has something like that.

Basically where when the clutch pedal hits a switch it enables a rev limit.

exactly. flat-shifting will cut in a 2nd rev-limit of your choice when you activate a switch (usually the clutch switch is used). As an added benefit the extra rev-limiter works similar to how a two-step does. By dropping ignition to one cylinder @ a time you're creating a load on the engine even though the clutch pedal is in, which helps keep boost up between shifts

~matt